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![Karthik Nayak](/assets/img/avatar_default.png)
Introduce ref_formatting_state which will hold the formatted output strbuf instead of directly printing to stdout. This will help us in creating modifier atoms which modify the format specified before printing to stdout. Implement a stack machinery for ref_formatting_state, this allows us to push and pop elements onto the stack. Whenever we pop an element from the stack, the strbuf from that element is appended to the strbuf of the next element on the stack, this will allow us to support nesting of modifier atoms. Rename some functions to reflect the changes made: print_value() -> append_atom() emit() -> append_literal() Mentored-by: Christian Couder <christian.couder@gmail.com> Mentored-by: Matthieu Moy <matthieu.moy@grenoble-inp.fr> Signed-off-by: Karthik Nayak <karthik.188@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
1383 lines
34 KiB
C
1383 lines
34 KiB
C
#include "builtin.h"
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#include "cache.h"
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#include "parse-options.h"
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#include "refs.h"
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#include "wildmatch.h"
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#include "commit.h"
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#include "remote.h"
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#include "color.h"
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#include "tag.h"
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#include "quote.h"
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#include "ref-filter.h"
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#include "revision.h"
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typedef enum { FIELD_STR, FIELD_ULONG, FIELD_TIME } cmp_type;
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static struct {
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const char *name;
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cmp_type cmp_type;
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} valid_atom[] = {
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{ "refname" },
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{ "objecttype" },
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{ "objectsize", FIELD_ULONG },
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{ "objectname" },
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{ "tree" },
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{ "parent" },
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{ "numparent", FIELD_ULONG },
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{ "object" },
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{ "type" },
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{ "tag" },
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{ "author" },
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{ "authorname" },
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{ "authoremail" },
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{ "authordate", FIELD_TIME },
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{ "committer" },
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{ "committername" },
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{ "committeremail" },
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{ "committerdate", FIELD_TIME },
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{ "tagger" },
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{ "taggername" },
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{ "taggeremail" },
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{ "taggerdate", FIELD_TIME },
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{ "creator" },
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{ "creatordate", FIELD_TIME },
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{ "subject" },
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{ "body" },
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{ "contents" },
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{ "contents:subject" },
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{ "contents:body" },
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{ "contents:signature" },
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{ "upstream" },
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{ "push" },
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{ "symref" },
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{ "flag" },
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{ "HEAD" },
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{ "color" },
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};
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#define REF_FORMATTING_STATE_INIT { 0, NULL }
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struct ref_formatting_stack {
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struct ref_formatting_stack *prev;
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struct strbuf output;
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};
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struct ref_formatting_state {
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int quote_style;
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struct ref_formatting_stack *stack;
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};
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struct atom_value {
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const char *s;
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unsigned long ul; /* used for sorting when not FIELD_STR */
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};
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/*
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* An atom is a valid field atom listed above, possibly prefixed with
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* a "*" to denote deref_tag().
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*
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* We parse given format string and sort specifiers, and make a list
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* of properties that we need to extract out of objects. ref_array_item
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* structure will hold an array of values extracted that can be
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* indexed with the "atom number", which is an index into this
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* array.
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*/
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static const char **used_atom;
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static cmp_type *used_atom_type;
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static int used_atom_cnt, need_tagged, need_symref;
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static int need_color_reset_at_eol;
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/*
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* Used to parse format string and sort specifiers
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*/
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int parse_ref_filter_atom(const char *atom, const char *ep)
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{
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const char *sp;
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int i, at;
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sp = atom;
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if (*sp == '*' && sp < ep)
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sp++; /* deref */
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if (ep <= sp)
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die("malformed field name: %.*s", (int)(ep-atom), atom);
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/* Do we have the atom already used elsewhere? */
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for (i = 0; i < used_atom_cnt; i++) {
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int len = strlen(used_atom[i]);
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if (len == ep - atom && !memcmp(used_atom[i], atom, len))
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return i;
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}
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/* Is the atom a valid one? */
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for (i = 0; i < ARRAY_SIZE(valid_atom); i++) {
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int len = strlen(valid_atom[i].name);
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/*
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* If the atom name has a colon, strip it and everything after
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* it off - it specifies the format for this entry, and
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* shouldn't be used for checking against the valid_atom
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* table.
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*/
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const char *formatp = strchr(sp, ':');
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if (!formatp || ep < formatp)
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formatp = ep;
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if (len == formatp - sp && !memcmp(valid_atom[i].name, sp, len))
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break;
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}
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if (ARRAY_SIZE(valid_atom) <= i)
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die("unknown field name: %.*s", (int)(ep-atom), atom);
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/* Add it in, including the deref prefix */
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at = used_atom_cnt;
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used_atom_cnt++;
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REALLOC_ARRAY(used_atom, used_atom_cnt);
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REALLOC_ARRAY(used_atom_type, used_atom_cnt);
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used_atom[at] = xmemdupz(atom, ep - atom);
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used_atom_type[at] = valid_atom[i].cmp_type;
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if (*atom == '*')
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need_tagged = 1;
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if (!strcmp(used_atom[at], "symref"))
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need_symref = 1;
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return at;
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}
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static void push_stack_element(struct ref_formatting_stack **stack)
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{
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struct ref_formatting_stack *s = xcalloc(1, sizeof(struct ref_formatting_stack));
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strbuf_init(&s->output, 0);
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s->prev = *stack;
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*stack = s;
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}
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static void pop_stack_element(struct ref_formatting_stack **stack)
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{
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struct ref_formatting_stack *current = *stack;
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struct ref_formatting_stack *prev = current->prev;
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if (prev)
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strbuf_addbuf(&prev->output, ¤t->output);
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strbuf_release(¤t->output);
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free(current);
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*stack = prev;
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}
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/*
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* In a format string, find the next occurrence of %(atom).
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*/
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static const char *find_next(const char *cp)
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{
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while (*cp) {
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if (*cp == '%') {
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/*
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* %( is the start of an atom;
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* %% is a quoted per-cent.
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*/
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if (cp[1] == '(')
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return cp;
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else if (cp[1] == '%')
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cp++; /* skip over two % */
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/* otherwise this is a singleton, literal % */
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}
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cp++;
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}
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return NULL;
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}
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/*
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* Make sure the format string is well formed, and parse out
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* the used atoms.
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*/
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int verify_ref_format(const char *format)
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{
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const char *cp, *sp;
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need_color_reset_at_eol = 0;
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for (cp = format; *cp && (sp = find_next(cp)); ) {
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const char *color, *ep = strchr(sp, ')');
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int at;
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if (!ep)
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return error("malformed format string %s", sp);
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/* sp points at "%(" and ep points at the closing ")" */
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at = parse_ref_filter_atom(sp + 2, ep);
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cp = ep + 1;
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if (skip_prefix(used_atom[at], "color:", &color))
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need_color_reset_at_eol = !!strcmp(color, "reset");
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}
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return 0;
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}
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/*
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* Given an object name, read the object data and size, and return a
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* "struct object". If the object data we are returning is also borrowed
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* by the "struct object" representation, set *eaten as well---it is a
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* signal from parse_object_buffer to us not to free the buffer.
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*/
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static void *get_obj(const unsigned char *sha1, struct object **obj, unsigned long *sz, int *eaten)
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{
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enum object_type type;
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void *buf = read_sha1_file(sha1, &type, sz);
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if (buf)
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*obj = parse_object_buffer(sha1, type, *sz, buf, eaten);
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else
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*obj = NULL;
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return buf;
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}
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static int grab_objectname(const char *name, const unsigned char *sha1,
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struct atom_value *v)
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{
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if (!strcmp(name, "objectname")) {
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char *s = xmalloc(41);
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strcpy(s, sha1_to_hex(sha1));
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v->s = s;
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return 1;
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}
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if (!strcmp(name, "objectname:short")) {
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v->s = xstrdup(find_unique_abbrev(sha1, DEFAULT_ABBREV));
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return 1;
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}
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return 0;
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}
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/* See grab_values */
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static void grab_common_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
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{
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int i;
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for (i = 0; i < used_atom_cnt; i++) {
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const char *name = used_atom[i];
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struct atom_value *v = &val[i];
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if (!!deref != (*name == '*'))
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continue;
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if (deref)
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name++;
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if (!strcmp(name, "objecttype"))
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v->s = typename(obj->type);
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else if (!strcmp(name, "objectsize")) {
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char *s = xmalloc(40);
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sprintf(s, "%lu", sz);
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v->ul = sz;
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v->s = s;
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}
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else if (deref)
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grab_objectname(name, obj->sha1, v);
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}
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}
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/* See grab_values */
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static void grab_tag_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
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{
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int i;
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struct tag *tag = (struct tag *) obj;
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for (i = 0; i < used_atom_cnt; i++) {
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const char *name = used_atom[i];
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struct atom_value *v = &val[i];
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if (!!deref != (*name == '*'))
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continue;
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if (deref)
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name++;
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if (!strcmp(name, "tag"))
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v->s = tag->tag;
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else if (!strcmp(name, "type") && tag->tagged)
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v->s = typename(tag->tagged->type);
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else if (!strcmp(name, "object") && tag->tagged) {
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char *s = xmalloc(41);
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strcpy(s, sha1_to_hex(tag->tagged->sha1));
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v->s = s;
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}
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}
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}
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/* See grab_values */
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static void grab_commit_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
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{
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int i;
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struct commit *commit = (struct commit *) obj;
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for (i = 0; i < used_atom_cnt; i++) {
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const char *name = used_atom[i];
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struct atom_value *v = &val[i];
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if (!!deref != (*name == '*'))
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continue;
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if (deref)
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name++;
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if (!strcmp(name, "tree")) {
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char *s = xmalloc(41);
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strcpy(s, sha1_to_hex(commit->tree->object.sha1));
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v->s = s;
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}
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if (!strcmp(name, "numparent")) {
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char *s = xmalloc(40);
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v->ul = commit_list_count(commit->parents);
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sprintf(s, "%lu", v->ul);
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v->s = s;
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}
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else if (!strcmp(name, "parent")) {
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int num = commit_list_count(commit->parents);
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int i;
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struct commit_list *parents;
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char *s = xmalloc(41 * num + 1);
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v->s = s;
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for (i = 0, parents = commit->parents;
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parents;
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parents = parents->next, i = i + 41) {
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struct commit *parent = parents->item;
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strcpy(s+i, sha1_to_hex(parent->object.sha1));
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if (parents->next)
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s[i+40] = ' ';
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}
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if (!i)
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*s = '\0';
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}
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}
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}
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static const char *find_wholine(const char *who, int wholen, const char *buf, unsigned long sz)
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{
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const char *eol;
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while (*buf) {
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if (!strncmp(buf, who, wholen) &&
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buf[wholen] == ' ')
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return buf + wholen + 1;
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eol = strchr(buf, '\n');
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if (!eol)
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return "";
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eol++;
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if (*eol == '\n')
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return ""; /* end of header */
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buf = eol;
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}
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return "";
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}
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static const char *copy_line(const char *buf)
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{
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const char *eol = strchrnul(buf, '\n');
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return xmemdupz(buf, eol - buf);
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}
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static const char *copy_name(const char *buf)
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{
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const char *cp;
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for (cp = buf; *cp && *cp != '\n'; cp++) {
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if (!strncmp(cp, " <", 2))
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return xmemdupz(buf, cp - buf);
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}
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return "";
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}
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static const char *copy_email(const char *buf)
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{
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const char *email = strchr(buf, '<');
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const char *eoemail;
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if (!email)
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return "";
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eoemail = strchr(email, '>');
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if (!eoemail)
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return "";
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return xmemdupz(email, eoemail + 1 - email);
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}
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static char *copy_subject(const char *buf, unsigned long len)
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{
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char *r = xmemdupz(buf, len);
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int i;
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for (i = 0; i < len; i++)
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if (r[i] == '\n')
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r[i] = ' ';
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return r;
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}
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static void grab_date(const char *buf, struct atom_value *v, const char *atomname)
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{
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const char *eoemail = strstr(buf, "> ");
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char *zone;
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unsigned long timestamp;
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long tz;
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struct date_mode date_mode = { DATE_NORMAL };
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const char *formatp;
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/*
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* We got here because atomname ends in "date" or "date<something>";
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* it's not possible that <something> is not ":<format>" because
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* parse_ref_filter_atom() wouldn't have allowed it, so we can assume that no
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* ":" means no format is specified, and use the default.
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*/
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formatp = strchr(atomname, ':');
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if (formatp != NULL) {
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formatp++;
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parse_date_format(formatp, &date_mode);
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}
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if (!eoemail)
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goto bad;
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timestamp = strtoul(eoemail + 2, &zone, 10);
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if (timestamp == ULONG_MAX)
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goto bad;
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tz = strtol(zone, NULL, 10);
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if ((tz == LONG_MIN || tz == LONG_MAX) && errno == ERANGE)
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goto bad;
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v->s = xstrdup(show_date(timestamp, tz, &date_mode));
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v->ul = timestamp;
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return;
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bad:
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v->s = "";
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v->ul = 0;
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}
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/* See grab_values */
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static void grab_person(const char *who, struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
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{
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int i;
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int wholen = strlen(who);
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const char *wholine = NULL;
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for (i = 0; i < used_atom_cnt; i++) {
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const char *name = used_atom[i];
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struct atom_value *v = &val[i];
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if (!!deref != (*name == '*'))
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continue;
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if (deref)
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name++;
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if (strncmp(who, name, wholen))
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continue;
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if (name[wholen] != 0 &&
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strcmp(name + wholen, "name") &&
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strcmp(name + wholen, "email") &&
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!starts_with(name + wholen, "date"))
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continue;
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if (!wholine)
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wholine = find_wholine(who, wholen, buf, sz);
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if (!wholine)
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return; /* no point looking for it */
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if (name[wholen] == 0)
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v->s = copy_line(wholine);
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else if (!strcmp(name + wholen, "name"))
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v->s = copy_name(wholine);
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else if (!strcmp(name + wholen, "email"))
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v->s = copy_email(wholine);
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else if (starts_with(name + wholen, "date"))
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grab_date(wholine, v, name);
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}
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/*
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* For a tag or a commit object, if "creator" or "creatordate" is
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* requested, do something special.
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*/
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if (strcmp(who, "tagger") && strcmp(who, "committer"))
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return; /* "author" for commit object is not wanted */
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if (!wholine)
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wholine = find_wholine(who, wholen, buf, sz);
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if (!wholine)
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return;
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for (i = 0; i < used_atom_cnt; i++) {
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const char *name = used_atom[i];
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struct atom_value *v = &val[i];
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if (!!deref != (*name == '*'))
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continue;
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if (deref)
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name++;
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if (starts_with(name, "creatordate"))
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grab_date(wholine, v, name);
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else if (!strcmp(name, "creator"))
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v->s = copy_line(wholine);
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}
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}
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static void find_subpos(const char *buf, unsigned long sz,
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const char **sub, unsigned long *sublen,
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const char **body, unsigned long *bodylen,
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unsigned long *nonsiglen,
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const char **sig, unsigned long *siglen)
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{
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const char *eol;
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/* skip past header until we hit empty line */
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while (*buf && *buf != '\n') {
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eol = strchrnul(buf, '\n');
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if (*eol)
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eol++;
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buf = eol;
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}
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/* skip any empty lines */
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while (*buf == '\n')
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buf++;
|
|
|
|
/* parse signature first; we might not even have a subject line */
|
|
*sig = buf + parse_signature(buf, strlen(buf));
|
|
*siglen = strlen(*sig);
|
|
|
|
/* subject is first non-empty line */
|
|
*sub = buf;
|
|
/* subject goes to first empty line */
|
|
while (buf < *sig && *buf && *buf != '\n') {
|
|
eol = strchrnul(buf, '\n');
|
|
if (*eol)
|
|
eol++;
|
|
buf = eol;
|
|
}
|
|
*sublen = buf - *sub;
|
|
/* drop trailing newline, if present */
|
|
if (*sublen && (*sub)[*sublen - 1] == '\n')
|
|
*sublen -= 1;
|
|
|
|
/* skip any empty lines */
|
|
while (*buf == '\n')
|
|
buf++;
|
|
*body = buf;
|
|
*bodylen = strlen(buf);
|
|
*nonsiglen = *sig - buf;
|
|
}
|
|
|
|
/* See grab_values */
|
|
static void grab_sub_body_contents(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
|
|
{
|
|
int i;
|
|
const char *subpos = NULL, *bodypos = NULL, *sigpos = NULL;
|
|
unsigned long sublen = 0, bodylen = 0, nonsiglen = 0, siglen = 0;
|
|
|
|
for (i = 0; i < used_atom_cnt; i++) {
|
|
const char *name = used_atom[i];
|
|
struct atom_value *v = &val[i];
|
|
if (!!deref != (*name == '*'))
|
|
continue;
|
|
if (deref)
|
|
name++;
|
|
if (strcmp(name, "subject") &&
|
|
strcmp(name, "body") &&
|
|
strcmp(name, "contents") &&
|
|
strcmp(name, "contents:subject") &&
|
|
strcmp(name, "contents:body") &&
|
|
strcmp(name, "contents:signature"))
|
|
continue;
|
|
if (!subpos)
|
|
find_subpos(buf, sz,
|
|
&subpos, &sublen,
|
|
&bodypos, &bodylen, &nonsiglen,
|
|
&sigpos, &siglen);
|
|
|
|
if (!strcmp(name, "subject"))
|
|
v->s = copy_subject(subpos, sublen);
|
|
else if (!strcmp(name, "contents:subject"))
|
|
v->s = copy_subject(subpos, sublen);
|
|
else if (!strcmp(name, "body"))
|
|
v->s = xmemdupz(bodypos, bodylen);
|
|
else if (!strcmp(name, "contents:body"))
|
|
v->s = xmemdupz(bodypos, nonsiglen);
|
|
else if (!strcmp(name, "contents:signature"))
|
|
v->s = xmemdupz(sigpos, siglen);
|
|
else if (!strcmp(name, "contents"))
|
|
v->s = xstrdup(subpos);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* We want to have empty print-string for field requests
|
|
* that do not apply (e.g. "authordate" for a tag object)
|
|
*/
|
|
static void fill_missing_values(struct atom_value *val)
|
|
{
|
|
int i;
|
|
for (i = 0; i < used_atom_cnt; i++) {
|
|
struct atom_value *v = &val[i];
|
|
if (v->s == NULL)
|
|
v->s = "";
|
|
}
|
|
}
|
|
|
|
/*
|
|
* val is a list of atom_value to hold returned values. Extract
|
|
* the values for atoms in used_atom array out of (obj, buf, sz).
|
|
* when deref is false, (obj, buf, sz) is the object that is
|
|
* pointed at by the ref itself; otherwise it is the object the
|
|
* ref (which is a tag) refers to.
|
|
*/
|
|
static void grab_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
|
|
{
|
|
grab_common_values(val, deref, obj, buf, sz);
|
|
switch (obj->type) {
|
|
case OBJ_TAG:
|
|
grab_tag_values(val, deref, obj, buf, sz);
|
|
grab_sub_body_contents(val, deref, obj, buf, sz);
|
|
grab_person("tagger", val, deref, obj, buf, sz);
|
|
break;
|
|
case OBJ_COMMIT:
|
|
grab_commit_values(val, deref, obj, buf, sz);
|
|
grab_sub_body_contents(val, deref, obj, buf, sz);
|
|
grab_person("author", val, deref, obj, buf, sz);
|
|
grab_person("committer", val, deref, obj, buf, sz);
|
|
break;
|
|
case OBJ_TREE:
|
|
/* grab_tree_values(val, deref, obj, buf, sz); */
|
|
break;
|
|
case OBJ_BLOB:
|
|
/* grab_blob_values(val, deref, obj, buf, sz); */
|
|
break;
|
|
default:
|
|
die("Eh? Object of type %d?", obj->type);
|
|
}
|
|
}
|
|
|
|
static inline char *copy_advance(char *dst, const char *src)
|
|
{
|
|
while (*src)
|
|
*dst++ = *src++;
|
|
return dst;
|
|
}
|
|
|
|
/*
|
|
* Parse the object referred by ref, and grab needed value.
|
|
*/
|
|
static void populate_value(struct ref_array_item *ref)
|
|
{
|
|
void *buf;
|
|
struct object *obj;
|
|
int eaten, i;
|
|
unsigned long size;
|
|
const unsigned char *tagged;
|
|
|
|
ref->value = xcalloc(used_atom_cnt, sizeof(struct atom_value));
|
|
|
|
if (need_symref && (ref->flag & REF_ISSYMREF) && !ref->symref) {
|
|
unsigned char unused1[20];
|
|
ref->symref = resolve_refdup(ref->refname, RESOLVE_REF_READING,
|
|
unused1, NULL);
|
|
if (!ref->symref)
|
|
ref->symref = "";
|
|
}
|
|
|
|
/* Fill in specials first */
|
|
for (i = 0; i < used_atom_cnt; i++) {
|
|
const char *name = used_atom[i];
|
|
struct atom_value *v = &ref->value[i];
|
|
int deref = 0;
|
|
const char *refname;
|
|
const char *formatp;
|
|
struct branch *branch = NULL;
|
|
|
|
if (*name == '*') {
|
|
deref = 1;
|
|
name++;
|
|
}
|
|
|
|
if (starts_with(name, "refname"))
|
|
refname = ref->refname;
|
|
else if (starts_with(name, "symref"))
|
|
refname = ref->symref ? ref->symref : "";
|
|
else if (starts_with(name, "upstream")) {
|
|
const char *branch_name;
|
|
/* only local branches may have an upstream */
|
|
if (!skip_prefix(ref->refname, "refs/heads/",
|
|
&branch_name))
|
|
continue;
|
|
branch = branch_get(branch_name);
|
|
|
|
refname = branch_get_upstream(branch, NULL);
|
|
if (!refname)
|
|
continue;
|
|
} else if (starts_with(name, "push")) {
|
|
const char *branch_name;
|
|
if (!skip_prefix(ref->refname, "refs/heads/",
|
|
&branch_name))
|
|
continue;
|
|
branch = branch_get(branch_name);
|
|
|
|
refname = branch_get_push(branch, NULL);
|
|
if (!refname)
|
|
continue;
|
|
} else if (starts_with(name, "color:")) {
|
|
char color[COLOR_MAXLEN] = "";
|
|
|
|
if (color_parse(name + 6, color) < 0)
|
|
die(_("unable to parse format"));
|
|
v->s = xstrdup(color);
|
|
continue;
|
|
} else if (!strcmp(name, "flag")) {
|
|
char buf[256], *cp = buf;
|
|
if (ref->flag & REF_ISSYMREF)
|
|
cp = copy_advance(cp, ",symref");
|
|
if (ref->flag & REF_ISPACKED)
|
|
cp = copy_advance(cp, ",packed");
|
|
if (cp == buf)
|
|
v->s = "";
|
|
else {
|
|
*cp = '\0';
|
|
v->s = xstrdup(buf + 1);
|
|
}
|
|
continue;
|
|
} else if (!deref && grab_objectname(name, ref->objectname, v)) {
|
|
continue;
|
|
} else if (!strcmp(name, "HEAD")) {
|
|
const char *head;
|
|
unsigned char sha1[20];
|
|
|
|
head = resolve_ref_unsafe("HEAD", RESOLVE_REF_READING,
|
|
sha1, NULL);
|
|
if (!strcmp(ref->refname, head))
|
|
v->s = "*";
|
|
else
|
|
v->s = " ";
|
|
continue;
|
|
} else
|
|
continue;
|
|
|
|
formatp = strchr(name, ':');
|
|
if (formatp) {
|
|
int num_ours, num_theirs;
|
|
|
|
formatp++;
|
|
if (!strcmp(formatp, "short"))
|
|
refname = shorten_unambiguous_ref(refname,
|
|
warn_ambiguous_refs);
|
|
else if (!strcmp(formatp, "track") &&
|
|
(starts_with(name, "upstream") ||
|
|
starts_with(name, "push"))) {
|
|
char buf[40];
|
|
|
|
if (stat_tracking_info(branch, &num_ours,
|
|
&num_theirs, NULL))
|
|
continue;
|
|
|
|
if (!num_ours && !num_theirs)
|
|
v->s = "";
|
|
else if (!num_ours) {
|
|
sprintf(buf, "[behind %d]", num_theirs);
|
|
v->s = xstrdup(buf);
|
|
} else if (!num_theirs) {
|
|
sprintf(buf, "[ahead %d]", num_ours);
|
|
v->s = xstrdup(buf);
|
|
} else {
|
|
sprintf(buf, "[ahead %d, behind %d]",
|
|
num_ours, num_theirs);
|
|
v->s = xstrdup(buf);
|
|
}
|
|
continue;
|
|
} else if (!strcmp(formatp, "trackshort") &&
|
|
(starts_with(name, "upstream") ||
|
|
starts_with(name, "push"))) {
|
|
assert(branch);
|
|
|
|
if (stat_tracking_info(branch, &num_ours,
|
|
&num_theirs, NULL))
|
|
continue;
|
|
|
|
if (!num_ours && !num_theirs)
|
|
v->s = "=";
|
|
else if (!num_ours)
|
|
v->s = "<";
|
|
else if (!num_theirs)
|
|
v->s = ">";
|
|
else
|
|
v->s = "<>";
|
|
continue;
|
|
} else
|
|
die("unknown %.*s format %s",
|
|
(int)(formatp - name), name, formatp);
|
|
}
|
|
|
|
if (!deref)
|
|
v->s = refname;
|
|
else {
|
|
int len = strlen(refname);
|
|
char *s = xmalloc(len + 4);
|
|
sprintf(s, "%s^{}", refname);
|
|
v->s = s;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < used_atom_cnt; i++) {
|
|
struct atom_value *v = &ref->value[i];
|
|
if (v->s == NULL)
|
|
goto need_obj;
|
|
}
|
|
return;
|
|
|
|
need_obj:
|
|
buf = get_obj(ref->objectname, &obj, &size, &eaten);
|
|
if (!buf)
|
|
die("missing object %s for %s",
|
|
sha1_to_hex(ref->objectname), ref->refname);
|
|
if (!obj)
|
|
die("parse_object_buffer failed on %s for %s",
|
|
sha1_to_hex(ref->objectname), ref->refname);
|
|
|
|
grab_values(ref->value, 0, obj, buf, size);
|
|
if (!eaten)
|
|
free(buf);
|
|
|
|
/*
|
|
* If there is no atom that wants to know about tagged
|
|
* object, we are done.
|
|
*/
|
|
if (!need_tagged || (obj->type != OBJ_TAG))
|
|
return;
|
|
|
|
/*
|
|
* If it is a tag object, see if we use a value that derefs
|
|
* the object, and if we do grab the object it refers to.
|
|
*/
|
|
tagged = ((struct tag *)obj)->tagged->sha1;
|
|
|
|
/*
|
|
* NEEDSWORK: This derefs tag only once, which
|
|
* is good to deal with chains of trust, but
|
|
* is not consistent with what deref_tag() does
|
|
* which peels the onion to the core.
|
|
*/
|
|
buf = get_obj(tagged, &obj, &size, &eaten);
|
|
if (!buf)
|
|
die("missing object %s for %s",
|
|
sha1_to_hex(tagged), ref->refname);
|
|
if (!obj)
|
|
die("parse_object_buffer failed on %s for %s",
|
|
sha1_to_hex(tagged), ref->refname);
|
|
grab_values(ref->value, 1, obj, buf, size);
|
|
if (!eaten)
|
|
free(buf);
|
|
}
|
|
|
|
/*
|
|
* Given a ref, return the value for the atom. This lazily gets value
|
|
* out of the object by calling populate value.
|
|
*/
|
|
static void get_ref_atom_value(struct ref_array_item *ref, int atom, struct atom_value **v)
|
|
{
|
|
if (!ref->value) {
|
|
populate_value(ref);
|
|
fill_missing_values(ref->value);
|
|
}
|
|
*v = &ref->value[atom];
|
|
}
|
|
|
|
enum contains_result {
|
|
CONTAINS_UNKNOWN = -1,
|
|
CONTAINS_NO = 0,
|
|
CONTAINS_YES = 1
|
|
};
|
|
|
|
/*
|
|
* Mimicking the real stack, this stack lives on the heap, avoiding stack
|
|
* overflows.
|
|
*
|
|
* At each recursion step, the stack items points to the commits whose
|
|
* ancestors are to be inspected.
|
|
*/
|
|
struct contains_stack {
|
|
int nr, alloc;
|
|
struct contains_stack_entry {
|
|
struct commit *commit;
|
|
struct commit_list *parents;
|
|
} *contains_stack;
|
|
};
|
|
|
|
static int in_commit_list(const struct commit_list *want, struct commit *c)
|
|
{
|
|
for (; want; want = want->next)
|
|
if (!hashcmp(want->item->object.sha1, c->object.sha1))
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Test whether the candidate or one of its parents is contained in the list.
|
|
* Do not recurse to find out, though, but return -1 if inconclusive.
|
|
*/
|
|
static enum contains_result contains_test(struct commit *candidate,
|
|
const struct commit_list *want)
|
|
{
|
|
/* was it previously marked as containing a want commit? */
|
|
if (candidate->object.flags & TMP_MARK)
|
|
return 1;
|
|
/* or marked as not possibly containing a want commit? */
|
|
if (candidate->object.flags & UNINTERESTING)
|
|
return 0;
|
|
/* or are we it? */
|
|
if (in_commit_list(want, candidate)) {
|
|
candidate->object.flags |= TMP_MARK;
|
|
return 1;
|
|
}
|
|
|
|
if (parse_commit(candidate) < 0)
|
|
return 0;
|
|
|
|
return -1;
|
|
}
|
|
|
|
static void push_to_contains_stack(struct commit *candidate, struct contains_stack *contains_stack)
|
|
{
|
|
ALLOC_GROW(contains_stack->contains_stack, contains_stack->nr + 1, contains_stack->alloc);
|
|
contains_stack->contains_stack[contains_stack->nr].commit = candidate;
|
|
contains_stack->contains_stack[contains_stack->nr++].parents = candidate->parents;
|
|
}
|
|
|
|
static enum contains_result contains_tag_algo(struct commit *candidate,
|
|
const struct commit_list *want)
|
|
{
|
|
struct contains_stack contains_stack = { 0, 0, NULL };
|
|
int result = contains_test(candidate, want);
|
|
|
|
if (result != CONTAINS_UNKNOWN)
|
|
return result;
|
|
|
|
push_to_contains_stack(candidate, &contains_stack);
|
|
while (contains_stack.nr) {
|
|
struct contains_stack_entry *entry = &contains_stack.contains_stack[contains_stack.nr - 1];
|
|
struct commit *commit = entry->commit;
|
|
struct commit_list *parents = entry->parents;
|
|
|
|
if (!parents) {
|
|
commit->object.flags |= UNINTERESTING;
|
|
contains_stack.nr--;
|
|
}
|
|
/*
|
|
* If we just popped the stack, parents->item has been marked,
|
|
* therefore contains_test will return a meaningful 0 or 1.
|
|
*/
|
|
else switch (contains_test(parents->item, want)) {
|
|
case CONTAINS_YES:
|
|
commit->object.flags |= TMP_MARK;
|
|
contains_stack.nr--;
|
|
break;
|
|
case CONTAINS_NO:
|
|
entry->parents = parents->next;
|
|
break;
|
|
case CONTAINS_UNKNOWN:
|
|
push_to_contains_stack(parents->item, &contains_stack);
|
|
break;
|
|
}
|
|
}
|
|
free(contains_stack.contains_stack);
|
|
return contains_test(candidate, want);
|
|
}
|
|
|
|
static int commit_contains(struct ref_filter *filter, struct commit *commit)
|
|
{
|
|
if (filter->with_commit_tag_algo)
|
|
return contains_tag_algo(commit, filter->with_commit);
|
|
return is_descendant_of(commit, filter->with_commit);
|
|
}
|
|
|
|
/*
|
|
* Return 1 if the refname matches one of the patterns, otherwise 0.
|
|
* A pattern can be path prefix (e.g. a refname "refs/heads/master"
|
|
* matches a pattern "refs/heads/") or a wildcard (e.g. the same ref
|
|
* matches "refs/heads/m*",too).
|
|
*/
|
|
static int match_name_as_path(const char **pattern, const char *refname)
|
|
{
|
|
int namelen = strlen(refname);
|
|
for (; *pattern; pattern++) {
|
|
const char *p = *pattern;
|
|
int plen = strlen(p);
|
|
|
|
if ((plen <= namelen) &&
|
|
!strncmp(refname, p, plen) &&
|
|
(refname[plen] == '\0' ||
|
|
refname[plen] == '/' ||
|
|
p[plen-1] == '/'))
|
|
return 1;
|
|
if (!wildmatch(p, refname, WM_PATHNAME, NULL))
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Given a ref (sha1, refname), check if the ref belongs to the array
|
|
* of sha1s. If the given ref is a tag, check if the given tag points
|
|
* at one of the sha1s in the given sha1 array.
|
|
* the given sha1_array.
|
|
* NEEDSWORK:
|
|
* 1. Only a single level of inderection is obtained, we might want to
|
|
* change this to account for multiple levels (e.g. annotated tags
|
|
* pointing to annotated tags pointing to a commit.)
|
|
* 2. As the refs are cached we might know what refname peels to without
|
|
* the need to parse the object via parse_object(). peel_ref() might be a
|
|
* more efficient alternative to obtain the pointee.
|
|
*/
|
|
static const unsigned char *match_points_at(struct sha1_array *points_at,
|
|
const unsigned char *sha1,
|
|
const char *refname)
|
|
{
|
|
const unsigned char *tagged_sha1 = NULL;
|
|
struct object *obj;
|
|
|
|
if (sha1_array_lookup(points_at, sha1) >= 0)
|
|
return sha1;
|
|
obj = parse_object(sha1);
|
|
if (!obj)
|
|
die(_("malformed object at '%s'"), refname);
|
|
if (obj->type == OBJ_TAG)
|
|
tagged_sha1 = ((struct tag *)obj)->tagged->sha1;
|
|
if (tagged_sha1 && sha1_array_lookup(points_at, tagged_sha1) >= 0)
|
|
return tagged_sha1;
|
|
return NULL;
|
|
}
|
|
|
|
/* Allocate space for a new ref_array_item and copy the objectname and flag to it */
|
|
static struct ref_array_item *new_ref_array_item(const char *refname,
|
|
const unsigned char *objectname,
|
|
int flag)
|
|
{
|
|
size_t len = strlen(refname);
|
|
struct ref_array_item *ref = xcalloc(1, sizeof(struct ref_array_item) + len + 1);
|
|
memcpy(ref->refname, refname, len);
|
|
ref->refname[len] = '\0';
|
|
hashcpy(ref->objectname, objectname);
|
|
ref->flag = flag;
|
|
|
|
return ref;
|
|
}
|
|
|
|
/*
|
|
* A call-back given to for_each_ref(). Filter refs and keep them for
|
|
* later object processing.
|
|
*/
|
|
static int ref_filter_handler(const char *refname, const struct object_id *oid, int flag, void *cb_data)
|
|
{
|
|
struct ref_filter_cbdata *ref_cbdata = cb_data;
|
|
struct ref_filter *filter = ref_cbdata->filter;
|
|
struct ref_array_item *ref;
|
|
struct commit *commit = NULL;
|
|
|
|
if (flag & REF_BAD_NAME) {
|
|
warning("ignoring ref with broken name %s", refname);
|
|
return 0;
|
|
}
|
|
|
|
if (flag & REF_ISBROKEN) {
|
|
warning("ignoring broken ref %s", refname);
|
|
return 0;
|
|
}
|
|
|
|
if (*filter->name_patterns && !match_name_as_path(filter->name_patterns, refname))
|
|
return 0;
|
|
|
|
if (filter->points_at.nr && !match_points_at(&filter->points_at, oid->hash, refname))
|
|
return 0;
|
|
|
|
/*
|
|
* A merge filter is applied on refs pointing to commits. Hence
|
|
* obtain the commit using the 'oid' available and discard all
|
|
* non-commits early. The actual filtering is done later.
|
|
*/
|
|
if (filter->merge_commit || filter->with_commit) {
|
|
commit = lookup_commit_reference_gently(oid->hash, 1);
|
|
if (!commit)
|
|
return 0;
|
|
/* We perform the filtering for the '--contains' option */
|
|
if (filter->with_commit &&
|
|
!commit_contains(filter, commit))
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* We do not open the object yet; sort may only need refname
|
|
* to do its job and the resulting list may yet to be pruned
|
|
* by maxcount logic.
|
|
*/
|
|
ref = new_ref_array_item(refname, oid->hash, flag);
|
|
ref->commit = commit;
|
|
|
|
REALLOC_ARRAY(ref_cbdata->array->items, ref_cbdata->array->nr + 1);
|
|
ref_cbdata->array->items[ref_cbdata->array->nr++] = ref;
|
|
return 0;
|
|
}
|
|
|
|
/* Free memory allocated for a ref_array_item */
|
|
static void free_array_item(struct ref_array_item *item)
|
|
{
|
|
free((char *)item->symref);
|
|
free(item);
|
|
}
|
|
|
|
/* Free all memory allocated for ref_array */
|
|
void ref_array_clear(struct ref_array *array)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < array->nr; i++)
|
|
free_array_item(array->items[i]);
|
|
free(array->items);
|
|
array->items = NULL;
|
|
array->nr = array->alloc = 0;
|
|
}
|
|
|
|
static void do_merge_filter(struct ref_filter_cbdata *ref_cbdata)
|
|
{
|
|
struct rev_info revs;
|
|
int i, old_nr;
|
|
struct ref_filter *filter = ref_cbdata->filter;
|
|
struct ref_array *array = ref_cbdata->array;
|
|
struct commit **to_clear = xcalloc(sizeof(struct commit *), array->nr);
|
|
|
|
init_revisions(&revs, NULL);
|
|
|
|
for (i = 0; i < array->nr; i++) {
|
|
struct ref_array_item *item = array->items[i];
|
|
add_pending_object(&revs, &item->commit->object, item->refname);
|
|
to_clear[i] = item->commit;
|
|
}
|
|
|
|
filter->merge_commit->object.flags |= UNINTERESTING;
|
|
add_pending_object(&revs, &filter->merge_commit->object, "");
|
|
|
|
revs.limited = 1;
|
|
if (prepare_revision_walk(&revs))
|
|
die(_("revision walk setup failed"));
|
|
|
|
old_nr = array->nr;
|
|
array->nr = 0;
|
|
|
|
for (i = 0; i < old_nr; i++) {
|
|
struct ref_array_item *item = array->items[i];
|
|
struct commit *commit = item->commit;
|
|
|
|
int is_merged = !!(commit->object.flags & UNINTERESTING);
|
|
|
|
if (is_merged == (filter->merge == REF_FILTER_MERGED_INCLUDE))
|
|
array->items[array->nr++] = array->items[i];
|
|
else
|
|
free_array_item(item);
|
|
}
|
|
|
|
for (i = 0; i < old_nr; i++)
|
|
clear_commit_marks(to_clear[i], ALL_REV_FLAGS);
|
|
clear_commit_marks(filter->merge_commit, ALL_REV_FLAGS);
|
|
free(to_clear);
|
|
}
|
|
|
|
/*
|
|
* API for filtering a set of refs. Based on the type of refs the user
|
|
* has requested, we iterate through those refs and apply filters
|
|
* as per the given ref_filter structure and finally store the
|
|
* filtered refs in the ref_array structure.
|
|
*/
|
|
int filter_refs(struct ref_array *array, struct ref_filter *filter, unsigned int type)
|
|
{
|
|
struct ref_filter_cbdata ref_cbdata;
|
|
int ret = 0;
|
|
|
|
ref_cbdata.array = array;
|
|
ref_cbdata.filter = filter;
|
|
|
|
/* Simple per-ref filtering */
|
|
if (type & (FILTER_REFS_ALL | FILTER_REFS_INCLUDE_BROKEN))
|
|
ret = for_each_rawref(ref_filter_handler, &ref_cbdata);
|
|
else if (type & FILTER_REFS_ALL)
|
|
ret = for_each_ref(ref_filter_handler, &ref_cbdata);
|
|
else if (type)
|
|
die("filter_refs: invalid type");
|
|
|
|
/* Filters that need revision walking */
|
|
if (filter->merge_commit)
|
|
do_merge_filter(&ref_cbdata);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int cmp_ref_sorting(struct ref_sorting *s, struct ref_array_item *a, struct ref_array_item *b)
|
|
{
|
|
struct atom_value *va, *vb;
|
|
int cmp;
|
|
cmp_type cmp_type = used_atom_type[s->atom];
|
|
|
|
get_ref_atom_value(a, s->atom, &va);
|
|
get_ref_atom_value(b, s->atom, &vb);
|
|
switch (cmp_type) {
|
|
case FIELD_STR:
|
|
cmp = strcmp(va->s, vb->s);
|
|
break;
|
|
default:
|
|
if (va->ul < vb->ul)
|
|
cmp = -1;
|
|
else if (va->ul == vb->ul)
|
|
cmp = 0;
|
|
else
|
|
cmp = 1;
|
|
break;
|
|
}
|
|
return (s->reverse) ? -cmp : cmp;
|
|
}
|
|
|
|
static struct ref_sorting *ref_sorting;
|
|
static int compare_refs(const void *a_, const void *b_)
|
|
{
|
|
struct ref_array_item *a = *((struct ref_array_item **)a_);
|
|
struct ref_array_item *b = *((struct ref_array_item **)b_);
|
|
struct ref_sorting *s;
|
|
|
|
for (s = ref_sorting; s; s = s->next) {
|
|
int cmp = cmp_ref_sorting(s, a, b);
|
|
if (cmp)
|
|
return cmp;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void ref_array_sort(struct ref_sorting *sorting, struct ref_array *array)
|
|
{
|
|
ref_sorting = sorting;
|
|
qsort(array->items, array->nr, sizeof(struct ref_array_item *), compare_refs);
|
|
}
|
|
|
|
static void append_atom(struct atom_value *v, struct ref_formatting_state *state)
|
|
{
|
|
struct strbuf *s = &state->stack->output;
|
|
|
|
switch (state->quote_style) {
|
|
case QUOTE_NONE:
|
|
strbuf_addstr(s, v->s);
|
|
break;
|
|
case QUOTE_SHELL:
|
|
sq_quote_buf(s, v->s);
|
|
break;
|
|
case QUOTE_PERL:
|
|
perl_quote_buf(s, v->s);
|
|
break;
|
|
case QUOTE_PYTHON:
|
|
python_quote_buf(s, v->s);
|
|
break;
|
|
case QUOTE_TCL:
|
|
tcl_quote_buf(s, v->s);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int hex1(char ch)
|
|
{
|
|
if ('0' <= ch && ch <= '9')
|
|
return ch - '0';
|
|
else if ('a' <= ch && ch <= 'f')
|
|
return ch - 'a' + 10;
|
|
else if ('A' <= ch && ch <= 'F')
|
|
return ch - 'A' + 10;
|
|
return -1;
|
|
}
|
|
static int hex2(const char *cp)
|
|
{
|
|
if (cp[0] && cp[1])
|
|
return (hex1(cp[0]) << 4) | hex1(cp[1]);
|
|
else
|
|
return -1;
|
|
}
|
|
|
|
static void append_literal(const char *cp, const char *ep, struct ref_formatting_state *state)
|
|
{
|
|
struct strbuf *s = &state->stack->output;
|
|
|
|
while (*cp && (!ep || cp < ep)) {
|
|
if (*cp == '%') {
|
|
if (cp[1] == '%')
|
|
cp++;
|
|
else {
|
|
int ch = hex2(cp + 1);
|
|
if (0 <= ch) {
|
|
strbuf_addch(s, ch);
|
|
cp += 3;
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
strbuf_addch(s, *cp);
|
|
cp++;
|
|
}
|
|
}
|
|
|
|
void show_ref_array_item(struct ref_array_item *info, const char *format, int quote_style)
|
|
{
|
|
const char *cp, *sp, *ep;
|
|
struct strbuf *final_buf;
|
|
struct ref_formatting_state state = REF_FORMATTING_STATE_INIT;
|
|
|
|
state.quote_style = quote_style;
|
|
push_stack_element(&state.stack);
|
|
|
|
for (cp = format; *cp && (sp = find_next(cp)); cp = ep + 1) {
|
|
struct atom_value *atomv;
|
|
|
|
ep = strchr(sp, ')');
|
|
if (cp < sp)
|
|
append_literal(cp, sp, &state);
|
|
get_ref_atom_value(info, parse_ref_filter_atom(sp + 2, ep), &atomv);
|
|
append_atom(atomv, &state);
|
|
}
|
|
if (*cp) {
|
|
sp = cp + strlen(cp);
|
|
append_literal(cp, sp, &state);
|
|
}
|
|
if (need_color_reset_at_eol) {
|
|
struct atom_value resetv;
|
|
char color[COLOR_MAXLEN] = "";
|
|
|
|
if (color_parse("reset", color) < 0)
|
|
die("BUG: couldn't parse 'reset' as a color");
|
|
resetv.s = color;
|
|
append_atom(&resetv, &state);
|
|
}
|
|
final_buf = &state.stack->output;
|
|
fwrite(final_buf->buf, 1, final_buf->len, stdout);
|
|
pop_stack_element(&state.stack);
|
|
putchar('\n');
|
|
}
|
|
|
|
/* If no sorting option is given, use refname to sort as default */
|
|
struct ref_sorting *ref_default_sorting(void)
|
|
{
|
|
static const char cstr_name[] = "refname";
|
|
|
|
struct ref_sorting *sorting = xcalloc(1, sizeof(*sorting));
|
|
|
|
sorting->next = NULL;
|
|
sorting->atom = parse_ref_filter_atom(cstr_name, cstr_name + strlen(cstr_name));
|
|
return sorting;
|
|
}
|
|
|
|
int parse_opt_ref_sorting(const struct option *opt, const char *arg, int unset)
|
|
{
|
|
struct ref_sorting **sorting_tail = opt->value;
|
|
struct ref_sorting *s;
|
|
int len;
|
|
|
|
if (!arg) /* should --no-sort void the list ? */
|
|
return -1;
|
|
|
|
s = xcalloc(1, sizeof(*s));
|
|
s->next = *sorting_tail;
|
|
*sorting_tail = s;
|
|
|
|
if (*arg == '-') {
|
|
s->reverse = 1;
|
|
arg++;
|
|
}
|
|
len = strlen(arg);
|
|
s->atom = parse_ref_filter_atom(arg, arg+len);
|
|
return 0;
|
|
}
|
|
|
|
int parse_opt_merge_filter(const struct option *opt, const char *arg, int unset)
|
|
{
|
|
struct ref_filter *rf = opt->value;
|
|
unsigned char sha1[20];
|
|
|
|
rf->merge = starts_with(opt->long_name, "no")
|
|
? REF_FILTER_MERGED_OMIT
|
|
: REF_FILTER_MERGED_INCLUDE;
|
|
|
|
if (get_sha1(arg, sha1))
|
|
die(_("malformed object name %s"), arg);
|
|
|
|
rf->merge_commit = lookup_commit_reference_gently(sha1, 0);
|
|
if (!rf->merge_commit)
|
|
return opterror(opt, "must point to a commit", 0);
|
|
|
|
return 0;
|
|
}
|