17712991a5
This is a first cut at a very simple parser for a git config file. The format of the file is a simple ini-file like thing, with simple variable/value pairs. You can (and should) make the variables have a simple single-level scope, ie a valid file looks something like this: # # This is the config file, and # a '#' or ';' character indicates # a comment # ; core variables [core] ; Don't trust file modes filemode = false ; Our diff algorithm [diff] external = "/usr/local/bin/gnu-diff -u" renames = true which parses into three variables: "core.filemode" is associated with the string "false", and "diff.external" gets the appropriate quoted value. Right now we only react to one variable: "core.filemode" is a boolean that decides if we should care about the 0100 (user-execute) bit of the stat information. Even that is just a parsing demonstration - this doesn't actually implement that st_mode compare logic itself. Different programs can react to different config options, although they should always fall back to calling "git_default_config()" on any config option name that they don't recognize. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
122 lines
2.7 KiB
C
122 lines
2.7 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 diff_files_usage[] =
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"git-diff-files [-q] "
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"[<common diff options>] [<path>...]"
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COMMON_DIFF_OPTIONS_HELP;
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static struct diff_options diff_options;
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static int silent = 0;
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static void show_unmerge(const char *path)
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{
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diff_unmerge(&diff_options, path);
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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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diff_addremove(&diff_options, pfx, ntohl(ce->ce_mode),
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ce->sha1, ce->name, NULL);
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}
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static void show_modified(int oldmode, int mode,
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const unsigned char *old_sha1, const unsigned char *sha1,
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char *path)
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{
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diff_change(&diff_options, oldmode, mode, old_sha1, sha1, path, NULL);
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}
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int main(int argc, const char **argv)
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{
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const char **pathspec;
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const char *prefix = setup_git_directory();
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int entries, i;
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git_config(git_default_config);
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diff_setup(&diff_options);
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while (1 < argc && argv[1][0] == '-') {
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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 {
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int diff_opt_cnt;
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diff_opt_cnt = diff_opt_parse(&diff_options,
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argv+1, argc-1);
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if (diff_opt_cnt < 0)
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usage(diff_files_usage);
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else if (diff_opt_cnt) {
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argv += diff_opt_cnt;
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argc -= diff_opt_cnt;
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continue;
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}
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else
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usage(diff_files_usage);
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}
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argv++; argc--;
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}
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/* Find the directory, and set up the pathspec */
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pathspec = get_pathspec(prefix, argv + 1);
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entries = read_cache();
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if (diff_setup_done(&diff_options) < 0)
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usage(diff_files_usage);
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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;
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struct cache_entry *ce = active_cache[i];
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int changed;
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if (!ce_path_match(ce, pathspec))
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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 (lstat(ce->name, &st) < 0) {
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if (errno != ENOENT && errno != ENOTDIR) {
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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 = ce_match_stat(ce, &st);
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if (!changed && !diff_options.find_copies_harder)
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continue;
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oldmode = ntohl(ce->ce_mode);
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show_modified(oldmode, DIFF_FILE_CANON_MODE(st.st_mode),
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ce->sha1, (changed ? null_sha1 : ce->sha1),
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ce->name);
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}
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diffcore_std(&diff_options);
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diff_flush(&diff_options);
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return 0;
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}
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