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![Elijah Newren](/assets/img/avatar_default.png)
hash.h depends upon and includes repository.h, due to the definition and use of the_hash_algo (defined as the_repository->hash_algo). However, most headers trying to include hash.h are only interested in the layout of the structs like object_id. Move the parts of hash.h that do not depend upon repository.h into a new file hash-ll.h (the "low level" parts of hash.h), and adjust other files to use this new header where the convenience inline functions aren't needed. This allows hash.h and object.h to be fairly small, minimal headers. It also exposes a lot of hidden dependencies on both path.h (which was brought in by repository.h) and repository.h (which was previously implicitly brought in by object.h), so also adjust other files to be more explicit about what they depend upon. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
201 lines
4.6 KiB
C
201 lines
4.6 KiB
C
#include "cache.h"
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#include "dir.h"
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#include "hash.h"
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#include "resolve-undo.h"
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#include "string-list.h"
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/* The only error case is to run out of memory in string-list */
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void record_resolve_undo(struct index_state *istate, struct cache_entry *ce)
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{
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struct string_list_item *lost;
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struct resolve_undo_info *ui;
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struct string_list *resolve_undo;
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int stage = ce_stage(ce);
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if (!stage)
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return;
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if (!istate->resolve_undo) {
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CALLOC_ARRAY(resolve_undo, 1);
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resolve_undo->strdup_strings = 1;
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istate->resolve_undo = resolve_undo;
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}
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resolve_undo = istate->resolve_undo;
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lost = string_list_insert(resolve_undo, ce->name);
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if (!lost->util)
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lost->util = xcalloc(1, sizeof(*ui));
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ui = lost->util;
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oidcpy(&ui->oid[stage - 1], &ce->oid);
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ui->mode[stage - 1] = ce->ce_mode;
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}
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void resolve_undo_write(struct strbuf *sb, struct string_list *resolve_undo)
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{
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struct string_list_item *item;
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for_each_string_list_item(item, resolve_undo) {
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struct resolve_undo_info *ui = item->util;
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int i;
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if (!ui)
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continue;
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strbuf_addstr(sb, item->string);
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strbuf_addch(sb, 0);
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for (i = 0; i < 3; i++)
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strbuf_addf(sb, "%o%c", ui->mode[i], 0);
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for (i = 0; i < 3; i++) {
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if (!ui->mode[i])
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continue;
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strbuf_add(sb, ui->oid[i].hash, the_hash_algo->rawsz);
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}
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}
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}
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struct string_list *resolve_undo_read(const char *data, unsigned long size)
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{
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struct string_list *resolve_undo;
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size_t len;
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char *endptr;
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int i;
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const unsigned rawsz = the_hash_algo->rawsz;
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CALLOC_ARRAY(resolve_undo, 1);
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resolve_undo->strdup_strings = 1;
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while (size) {
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struct string_list_item *lost;
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struct resolve_undo_info *ui;
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len = strlen(data) + 1;
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if (size <= len)
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goto error;
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lost = string_list_insert(resolve_undo, data);
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if (!lost->util)
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lost->util = xcalloc(1, sizeof(*ui));
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ui = lost->util;
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size -= len;
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data += len;
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for (i = 0; i < 3; i++) {
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ui->mode[i] = strtoul(data, &endptr, 8);
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if (!endptr || endptr == data || *endptr)
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goto error;
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len = (endptr + 1) - (char*)data;
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if (size <= len)
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goto error;
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size -= len;
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data += len;
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}
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for (i = 0; i < 3; i++) {
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if (!ui->mode[i])
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continue;
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if (size < rawsz)
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goto error;
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oidread(&ui->oid[i], (const unsigned char *)data);
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size -= rawsz;
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data += rawsz;
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}
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}
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return resolve_undo;
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error:
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string_list_clear(resolve_undo, 1);
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error("Index records invalid resolve-undo information");
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return NULL;
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}
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void resolve_undo_clear_index(struct index_state *istate)
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{
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struct string_list *resolve_undo = istate->resolve_undo;
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if (!resolve_undo)
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return;
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string_list_clear(resolve_undo, 1);
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free(resolve_undo);
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istate->resolve_undo = NULL;
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istate->cache_changed |= RESOLVE_UNDO_CHANGED;
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}
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int unmerge_index_entry_at(struct index_state *istate, int pos)
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{
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const struct cache_entry *ce;
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struct string_list_item *item;
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struct resolve_undo_info *ru;
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int i, err = 0, matched;
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char *name;
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if (!istate->resolve_undo)
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return pos;
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ce = istate->cache[pos];
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if (ce_stage(ce)) {
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/* already unmerged */
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while ((pos < istate->cache_nr) &&
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! strcmp(istate->cache[pos]->name, ce->name))
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pos++;
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return pos - 1; /* return the last entry processed */
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}
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item = string_list_lookup(istate->resolve_undo, ce->name);
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if (!item)
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return pos;
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ru = item->util;
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if (!ru)
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return pos;
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matched = ce->ce_flags & CE_MATCHED;
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name = xstrdup(ce->name);
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remove_index_entry_at(istate, pos);
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for (i = 0; i < 3; i++) {
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struct cache_entry *nce;
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if (!ru->mode[i])
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continue;
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nce = make_cache_entry(istate,
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ru->mode[i],
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&ru->oid[i],
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name, i + 1, 0);
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if (matched)
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nce->ce_flags |= CE_MATCHED;
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if (add_index_entry(istate, nce, ADD_CACHE_OK_TO_ADD)) {
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err = 1;
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error("cannot unmerge '%s'", name);
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}
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}
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free(name);
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if (err)
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return pos;
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free(ru);
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item->util = NULL;
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return unmerge_index_entry_at(istate, pos);
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}
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void unmerge_marked_index(struct index_state *istate)
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{
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int i;
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if (!istate->resolve_undo)
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return;
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/* TODO: audit for interaction with sparse-index. */
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ensure_full_index(istate);
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for (i = 0; i < istate->cache_nr; i++) {
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const struct cache_entry *ce = istate->cache[i];
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if (ce->ce_flags & CE_MATCHED)
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i = unmerge_index_entry_at(istate, i);
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}
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}
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void unmerge_index(struct index_state *istate, const struct pathspec *pathspec)
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{
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int i;
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if (!istate->resolve_undo)
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return;
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/* TODO: audit for interaction with sparse-index. */
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ensure_full_index(istate);
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for (i = 0; i < istate->cache_nr; i++) {
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const struct cache_entry *ce = istate->cache[i];
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if (!ce_path_match(istate, ce, pathspec, NULL))
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continue;
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i = unmerge_index_entry_at(istate, i);
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}
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}
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