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a3df180138
This also regularizes the make. The source files themselves don't get the "git-" prefix, because that's just inconvenient. So instead we just make the rule that "git-xxxx" depends on "xxxx.c", and do that for all the core programs (ie the old "git-mktag.c" got renamed to just "mktag.c" to match everything else). And "show-diff" got renamed to "git-diff-files" while at it, since that's what it really should be to match the other git-diff-xxx cases.
136 lines
2.9 KiB
C
136 lines
2.9 KiB
C
/*
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* GIT - The information manager from hell
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*
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* Copyright (C) Linus Torvalds, 2005
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*/
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#include "cache.h"
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#include "diff.h"
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static const char *show_diff_usage =
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"show-diff [-p] [-q] [-r] [-z] [paths...]";
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static int generate_patch = 0;
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static int line_termination = '\n';
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static int silent = 0;
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static int matches_pathspec(struct cache_entry *ce, char **spec, int cnt)
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{
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int i;
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int namelen = ce_namelen(ce);
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for (i = 0; i < cnt; i++) {
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int speclen = strlen(spec[i]);
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if (! strncmp(spec[i], ce->name, speclen) &&
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speclen <= namelen &&
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(ce->name[speclen] == 0 ||
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ce->name[speclen] == '/'))
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return 1;
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}
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return 0;
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}
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static void show_unmerge(const char *path)
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{
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if (generate_patch)
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diff_unmerge(path);
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else
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printf("U %s%c", path, line_termination);
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}
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static void show_file(int pfx, struct cache_entry *ce)
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{
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if (generate_patch)
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diff_addremove(pfx, ntohl(ce->ce_mode), ce->sha1,
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ce->name, NULL);
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else
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printf("%c%06o\t%s\t%s\t%s%c",
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pfx, ntohl(ce->ce_mode), "blob",
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sha1_to_hex(ce->sha1), ce->name, line_termination);
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}
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static void show_modified(int oldmode, int mode,
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const char *old_sha1, const char *sha1,
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char *path)
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{
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char old_sha1_hex[41];
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strcpy(old_sha1_hex, sha1_to_hex(old_sha1));
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if (generate_patch)
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diff_change(oldmode, mode, old_sha1, sha1, path, NULL);
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else
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printf("*%06o->%06o\tblob\t%s->%s\t%s%c",
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oldmode, mode, old_sha1_hex, sha1_to_hex(sha1), path,
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line_termination);
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}
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int main(int argc, char **argv)
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{
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static const char null_sha1[20] = { 0, };
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int entries = read_cache();
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int i;
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while (1 < argc && argv[1][0] == '-') {
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if (!strcmp(argv[1], "-p"))
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generate_patch = 1;
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else if (!strcmp(argv[1], "-q"))
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silent = 1;
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else if (!strcmp(argv[1], "-r"))
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; /* no-op */
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else if (!strcmp(argv[1], "-s"))
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; /* no-op */
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else if (!strcmp(argv[1], "-z"))
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line_termination = 0;
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else
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usage(show_diff_usage);
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argv++; argc--;
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}
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/* At this point, if argc == 1, then we are doing everything.
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* Otherwise argv[1] .. argv[argc-1] have the explicit paths.
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*/
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if (entries < 0) {
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perror("read_cache");
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exit(1);
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}
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for (i = 0; i < entries; i++) {
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struct stat st;
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unsigned int oldmode, mode;
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struct cache_entry *ce = active_cache[i];
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int changed;
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if (1 < argc &&
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! matches_pathspec(ce, argv+1, argc-1))
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continue;
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if (ce_stage(ce)) {
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show_unmerge(ce->name);
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while (i < entries &&
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!strcmp(ce->name, active_cache[i]->name))
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i++;
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i--; /* compensate for loop control increments */
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continue;
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}
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if (stat(ce->name, &st) < 0) {
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if (errno != ENOENT) {
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perror(ce->name);
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continue;
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}
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if (silent)
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continue;
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show_file('-', ce);
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continue;
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}
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changed = cache_match_stat(ce, &st);
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if (!changed)
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continue;
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oldmode = ntohl(ce->ce_mode);
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mode = S_IFREG | ce_permissions(st.st_mode);
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show_modified(oldmode, mode, ce->sha1, null_sha1,
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ce->name);
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}
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return 0;
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}
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