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![Jeff King](/assets/img/avatar_default.png)
We eventually want to drop the argv_array name and just use strvec consistently. There's no particular reason we have to do it all at once, or care about interactions between converted and unconverted bits. Because of our preprocessor compat layer, the names are interchangeable to the compiler (so even a definition and declaration using different names is OK). This patch converts all of the remaining files, as the resulting diff is reasonably sized. The conversion was done purely mechanically with: git ls-files '*.c' '*.h' | xargs perl -i -pe ' s/ARGV_ARRAY/STRVEC/g; s/argv_array/strvec/g; ' We'll deal with any indentation/style fallouts separately. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
342 lines
8.3 KiB
C
342 lines
8.3 KiB
C
#include "cache.h"
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#include "refs.h"
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#include "remote.h"
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#include "object-store.h"
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#include "strbuf.h"
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#include "url.h"
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#include "exec-cmd.h"
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#include "run-command.h"
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#include "vcs-svn/svndump.h"
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#include "notes.h"
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#include "strvec.h"
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static const char *url;
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static int dump_from_file;
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static const char *private_ref;
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static char *remote_ref;
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static const char *marksfilename, *notes_ref;
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struct rev_note { unsigned int rev_nr; };
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static int cmd_capabilities(const char *line);
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static int cmd_import(const char *line);
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static int cmd_list(const char *line);
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typedef int (*input_command_handler)(const char *);
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struct input_command_entry {
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const char *name;
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input_command_handler fn;
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unsigned char batchable; /* whether the command starts or is part of a batch */
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};
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static const struct input_command_entry input_command_list[] = {
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{ "capabilities", cmd_capabilities, 0 },
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{ "import", cmd_import, 1 },
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{ "list", cmd_list, 0 },
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{ NULL, NULL }
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};
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static int cmd_capabilities(const char *line)
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{
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printf("import\n");
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printf("bidi-import\n");
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printf("refspec %s:%s\n\n", remote_ref, private_ref);
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fflush(stdout);
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return 0;
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}
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static void terminate_batch(void)
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{
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/* terminate a current batch's fast-import stream */
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printf("done\n");
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fflush(stdout);
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}
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/* NOTE: 'ref' refers to a git reference, while 'rev' refers to a svn revision. */
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static char *read_ref_note(const struct object_id *oid)
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{
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const struct object_id *note_oid;
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char *msg = NULL;
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unsigned long msglen;
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enum object_type type;
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init_notes(NULL, notes_ref, NULL, 0);
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if (!(note_oid = get_note(NULL, oid)))
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return NULL; /* note tree not found */
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if (!(msg = read_object_file(note_oid, &type, &msglen)))
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error("Empty notes tree. %s", notes_ref);
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else if (!msglen || type != OBJ_BLOB) {
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error("Note contains unusable content. "
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"Is something else using this notes tree? %s", notes_ref);
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FREE_AND_NULL(msg);
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}
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free_notes(NULL);
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return msg;
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}
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static int parse_rev_note(const char *msg, struct rev_note *res)
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{
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const char *key, *value, *end;
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size_t len;
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while (*msg) {
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end = strchrnul(msg, '\n');
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len = end - msg;
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key = "Revision-number: ";
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if (starts_with(msg, key)) {
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long i;
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char *end;
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value = msg + strlen(key);
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i = strtol(value, &end, 0);
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if (end == value || i < 0 || i > UINT32_MAX)
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return -1;
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res->rev_nr = i;
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return 0;
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}
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msg += len + 1;
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}
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/* didn't find it */
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return -1;
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}
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static int note2mark_cb(const struct object_id *object_oid,
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const struct object_id *note_oid, char *note_path,
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void *cb_data)
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{
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FILE *file = (FILE *)cb_data;
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char *msg;
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unsigned long msglen;
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enum object_type type;
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struct rev_note note;
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if (!(msg = read_object_file(note_oid, &type, &msglen)) ||
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!msglen || type != OBJ_BLOB) {
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free(msg);
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return 1;
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}
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if (parse_rev_note(msg, ¬e))
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return 2;
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if (fprintf(file, ":%d %s\n", note.rev_nr, oid_to_hex(object_oid)) < 1)
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return 3;
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return 0;
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}
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static void regenerate_marks(void)
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{
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int ret;
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FILE *marksfile = xfopen(marksfilename, "w+");
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ret = for_each_note(NULL, 0, note2mark_cb, marksfile);
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if (ret)
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die("Regeneration of marks failed, returned %d.", ret);
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fclose(marksfile);
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}
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static void check_or_regenerate_marks(int latestrev)
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{
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FILE *marksfile;
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struct strbuf sb = STRBUF_INIT;
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struct strbuf line = STRBUF_INIT;
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int found = 0;
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if (latestrev < 1)
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return;
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init_notes(NULL, notes_ref, NULL, 0);
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marksfile = fopen(marksfilename, "r");
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if (!marksfile) {
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regenerate_marks();
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marksfile = xfopen(marksfilename, "r");
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fclose(marksfile);
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} else {
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strbuf_addf(&sb, ":%d ", latestrev);
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while (strbuf_getline_lf(&line, marksfile) != EOF) {
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if (starts_with(line.buf, sb.buf)) {
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found++;
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break;
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}
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}
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fclose(marksfile);
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if (!found)
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regenerate_marks();
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}
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free_notes(NULL);
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strbuf_release(&sb);
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strbuf_release(&line);
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}
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static int cmd_import(const char *line)
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{
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int code;
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int dumpin_fd;
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char *note_msg;
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struct object_id head_oid;
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unsigned int startrev;
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struct child_process svndump_proc = CHILD_PROCESS_INIT;
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const char *command = "svnrdump";
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if (read_ref(private_ref, &head_oid))
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startrev = 0;
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else {
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note_msg = read_ref_note(&head_oid);
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if(note_msg == NULL) {
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warning("No note found for %s.", private_ref);
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startrev = 0;
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} else {
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struct rev_note note = { 0 };
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if (parse_rev_note(note_msg, ¬e))
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die("Revision number couldn't be parsed from note.");
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startrev = note.rev_nr + 1;
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free(note_msg);
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}
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}
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check_or_regenerate_marks(startrev - 1);
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if (dump_from_file) {
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dumpin_fd = open(url, O_RDONLY);
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if(dumpin_fd < 0)
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die_errno("Couldn't open svn dump file %s.", url);
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} else {
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svndump_proc.out = -1;
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strvec_push(&svndump_proc.args, command);
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strvec_push(&svndump_proc.args, "dump");
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strvec_push(&svndump_proc.args, url);
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strvec_pushf(&svndump_proc.args, "-r%u:HEAD", startrev);
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code = start_command(&svndump_proc);
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if (code)
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die("Unable to start %s, code %d", command, code);
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dumpin_fd = svndump_proc.out;
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}
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/* setup marks file import/export */
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printf("feature import-marks-if-exists=%s\n"
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"feature export-marks=%s\n", marksfilename, marksfilename);
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svndump_init_fd(dumpin_fd, STDIN_FILENO);
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svndump_read(url, private_ref, notes_ref);
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svndump_deinit();
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svndump_reset();
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close(dumpin_fd);
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if (!dump_from_file) {
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code = finish_command(&svndump_proc);
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if (code)
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warning("%s, returned %d", command, code);
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}
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return 0;
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}
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static int cmd_list(const char *line)
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{
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printf("? %s\n\n", remote_ref);
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fflush(stdout);
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return 0;
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}
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static int do_command(struct strbuf *line)
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{
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const struct input_command_entry *p = input_command_list;
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static struct string_list batchlines = STRING_LIST_INIT_DUP;
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static const struct input_command_entry *batch_cmd;
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/*
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* commands can be grouped together in a batch.
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* Batches are ended by \n. If no batch is active the program ends.
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* During a batch all lines are buffered and passed to the handler function
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* when the batch is terminated.
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*/
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if (line->len == 0) {
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if (batch_cmd) {
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struct string_list_item *item;
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for_each_string_list_item(item, &batchlines)
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batch_cmd->fn(item->string);
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terminate_batch();
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batch_cmd = NULL;
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string_list_clear(&batchlines, 0);
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return 0; /* end of the batch, continue reading other commands. */
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}
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return 1; /* end of command stream, quit */
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}
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if (batch_cmd) {
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if (!starts_with(batch_cmd->name, line->buf))
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die("Active %s batch interrupted by %s", batch_cmd->name, line->buf);
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/* buffer batch lines */
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string_list_append(&batchlines, line->buf);
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return 0;
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}
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for (p = input_command_list; p->name; p++) {
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if (starts_with(line->buf, p->name) && (strlen(p->name) == line->len ||
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line->buf[strlen(p->name)] == ' ')) {
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if (p->batchable) {
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batch_cmd = p;
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string_list_append(&batchlines, line->buf);
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return 0;
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}
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return p->fn(line->buf);
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}
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}
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die("Unknown command '%s'\n", line->buf);
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return 0;
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}
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int cmd_main(int argc, const char **argv)
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{
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struct strbuf buf = STRBUF_INIT, url_sb = STRBUF_INIT,
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private_ref_sb = STRBUF_INIT, marksfilename_sb = STRBUF_INIT,
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notes_ref_sb = STRBUF_INIT;
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static struct remote *remote;
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const char *url_in, *remote_ref_short;
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setup_git_directory();
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if (argc < 2 || argc > 3) {
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usage("git-remote-svn <remote-name> [<url>]");
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return 1;
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}
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remote_ref_short = git_default_branch_name();
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remote_ref = xstrfmt("refs/heads/%s", remote_ref_short);
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remote = remote_get(argv[1]);
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url_in = (argc == 3) ? argv[2] : remote->url[0];
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if (starts_with(url_in, "file://")) {
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dump_from_file = 1;
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url = url_decode(url_in + sizeof("file://")-1);
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} else {
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dump_from_file = 0;
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end_url_with_slash(&url_sb, url_in);
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url = url_sb.buf;
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}
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strbuf_addf(&private_ref_sb, "refs/svn/%s/%s",
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remote->name, remote_ref_short);
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private_ref = private_ref_sb.buf;
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strbuf_addf(¬es_ref_sb, "refs/notes/%s/revs", remote->name);
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notes_ref = notes_ref_sb.buf;
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strbuf_addf(&marksfilename_sb, "%s/info/fast-import/remote-svn/%s.marks",
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get_git_dir(), remote->name);
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marksfilename = marksfilename_sb.buf;
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while (1) {
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if (strbuf_getline_lf(&buf, stdin) == EOF) {
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if (ferror(stdin))
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die("Error reading command stream");
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else
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die("Unexpected end of command stream");
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}
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if (do_command(&buf))
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break;
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strbuf_reset(&buf);
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}
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strbuf_release(&buf);
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strbuf_release(&url_sb);
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strbuf_release(&private_ref_sb);
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strbuf_release(¬es_ref_sb);
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strbuf_release(&marksfilename_sb);
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return 0;
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}
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