зеркало из https://github.com/microsoft/git.git
767 строки
17 KiB
C
767 строки
17 KiB
C
/*
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* This merges the file listing in the directory cache index
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* with the actual working directory list, and shows different
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* combinations of the two.
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*
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* Copyright (C) Linus Torvalds, 2005
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*/
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#include <dirent.h>
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#include <fnmatch.h>
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#include "cache.h"
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#include "quote.h"
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static int show_deleted = 0;
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static int show_cached = 0;
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static int show_others = 0;
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static int show_ignored = 0;
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static int show_stage = 0;
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static int show_unmerged = 0;
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static int show_modified = 0;
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static int show_killed = 0;
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static int show_other_directories = 0;
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static int line_terminator = '\n';
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static int prefix_len = 0, prefix_offset = 0;
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static const char *prefix = NULL;
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static const char **pathspec = NULL;
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static int error_unmatch = 0;
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static char *ps_matched = NULL;
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static const char *tag_cached = "";
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static const char *tag_unmerged = "";
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static const char *tag_removed = "";
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static const char *tag_other = "";
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static const char *tag_killed = "";
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static const char *tag_modified = "";
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static const char *exclude_per_dir = NULL;
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/* We maintain three exclude pattern lists:
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* EXC_CMDL lists patterns explicitly given on the command line.
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* EXC_DIRS lists patterns obtained from per-directory ignore files.
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* EXC_FILE lists patterns from fallback ignore files.
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*/
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#define EXC_CMDL 0
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#define EXC_DIRS 1
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#define EXC_FILE 2
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static struct exclude_list {
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int nr;
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int alloc;
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struct exclude {
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const char *pattern;
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const char *base;
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int baselen;
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} **excludes;
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} exclude_list[3];
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static void add_exclude(const char *string, const char *base,
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int baselen, struct exclude_list *which)
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{
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struct exclude *x = xmalloc(sizeof (*x));
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x->pattern = string;
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x->base = base;
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x->baselen = baselen;
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if (which->nr == which->alloc) {
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which->alloc = alloc_nr(which->alloc);
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which->excludes = realloc(which->excludes,
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which->alloc * sizeof(x));
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}
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which->excludes[which->nr++] = x;
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}
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static int add_excludes_from_file_1(const char *fname,
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const char *base,
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int baselen,
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struct exclude_list *which)
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{
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int fd, i;
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long size;
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char *buf, *entry;
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fd = open(fname, O_RDONLY);
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if (fd < 0)
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goto err;
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size = lseek(fd, 0, SEEK_END);
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if (size < 0)
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goto err;
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lseek(fd, 0, SEEK_SET);
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if (size == 0) {
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close(fd);
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return 0;
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}
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buf = xmalloc(size);
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if (read(fd, buf, size) != size)
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goto err;
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close(fd);
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entry = buf;
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for (i = 0; i < size; i++) {
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if (buf[i] == '\n') {
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if (entry != buf + i && entry[0] != '#') {
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buf[i - (i && buf[i-1] == '\r')] = 0;
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add_exclude(entry, base, baselen, which);
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}
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entry = buf + i + 1;
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}
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}
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return 0;
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err:
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if (0 <= fd)
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close(fd);
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return -1;
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}
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static void add_excludes_from_file(const char *fname)
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{
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if (add_excludes_from_file_1(fname, "", 0,
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&exclude_list[EXC_FILE]) < 0)
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die("cannot use %s as an exclude file", fname);
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}
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static int push_exclude_per_directory(const char *base, int baselen)
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{
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char exclude_file[PATH_MAX];
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struct exclude_list *el = &exclude_list[EXC_DIRS];
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int current_nr = el->nr;
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if (exclude_per_dir) {
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memcpy(exclude_file, base, baselen);
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strcpy(exclude_file + baselen, exclude_per_dir);
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add_excludes_from_file_1(exclude_file, base, baselen, el);
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}
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return current_nr;
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}
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static void pop_exclude_per_directory(int stk)
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{
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struct exclude_list *el = &exclude_list[EXC_DIRS];
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while (stk < el->nr)
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free(el->excludes[--el->nr]);
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}
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/* Scan the list and let the last match determines the fate.
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* Return 1 for exclude, 0 for include and -1 for undecided.
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*/
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static int excluded_1(const char *pathname,
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int pathlen,
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struct exclude_list *el)
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{
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int i;
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if (el->nr) {
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for (i = el->nr - 1; 0 <= i; i--) {
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struct exclude *x = el->excludes[i];
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const char *exclude = x->pattern;
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int to_exclude = 1;
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if (*exclude == '!') {
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to_exclude = 0;
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exclude++;
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}
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if (!strchr(exclude, '/')) {
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/* match basename */
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const char *basename = strrchr(pathname, '/');
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basename = (basename) ? basename+1 : pathname;
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if (fnmatch(exclude, basename, 0) == 0)
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return to_exclude;
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}
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else {
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/* match with FNM_PATHNAME:
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* exclude has base (baselen long) implicitly
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* in front of it.
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*/
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int baselen = x->baselen;
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if (*exclude == '/')
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exclude++;
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if (pathlen < baselen ||
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(baselen && pathname[baselen-1] != '/') ||
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strncmp(pathname, x->base, baselen))
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continue;
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if (fnmatch(exclude, pathname+baselen,
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FNM_PATHNAME) == 0)
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return to_exclude;
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}
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}
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}
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return -1; /* undecided */
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}
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static int excluded(const char *pathname)
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{
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int pathlen = strlen(pathname);
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int st;
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for (st = EXC_CMDL; st <= EXC_FILE; st++) {
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switch (excluded_1(pathname, pathlen, &exclude_list[st])) {
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case 0:
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return 0;
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case 1:
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return 1;
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}
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}
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return 0;
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}
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struct nond_on_fs {
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int len;
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char name[FLEX_ARRAY]; /* more */
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};
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static struct nond_on_fs **dir;
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static int nr_dir;
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static int dir_alloc;
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static void add_name(const char *pathname, int len)
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{
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struct nond_on_fs *ent;
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if (cache_name_pos(pathname, len) >= 0)
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return;
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if (nr_dir == dir_alloc) {
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dir_alloc = alloc_nr(dir_alloc);
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dir = xrealloc(dir, dir_alloc*sizeof(ent));
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}
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ent = xmalloc(sizeof(*ent) + len + 1);
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ent->len = len;
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memcpy(ent->name, pathname, len);
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ent->name[len] = 0;
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dir[nr_dir++] = ent;
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}
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static int dir_exists(const char *dirname, int len)
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{
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int pos = cache_name_pos(dirname, len);
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if (pos >= 0)
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return 1;
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pos = -pos-1;
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if (pos >= active_nr) /* can't */
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return 0;
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return !strncmp(active_cache[pos]->name, dirname, len);
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}
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/*
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* Read a directory tree. We currently ignore anything but
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* directories, regular files and symlinks. That's because git
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* doesn't handle them at all yet. Maybe that will change some
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* day.
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*
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* Also, we ignore the name ".git" (even if it is not a directory).
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* That likely will not change.
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*/
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static void read_directory(const char *path, const char *base, int baselen)
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{
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DIR *dir = opendir(path);
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if (dir) {
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int exclude_stk;
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struct dirent *de;
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char fullname[MAXPATHLEN + 1];
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memcpy(fullname, base, baselen);
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exclude_stk = push_exclude_per_directory(base, baselen);
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while ((de = readdir(dir)) != NULL) {
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int len;
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if ((de->d_name[0] == '.') &&
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(de->d_name[1] == 0 ||
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!strcmp(de->d_name + 1, ".") ||
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!strcmp(de->d_name + 1, "git")))
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continue;
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len = strlen(de->d_name);
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memcpy(fullname + baselen, de->d_name, len+1);
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if (excluded(fullname) != show_ignored)
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continue;
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switch (DTYPE(de)) {
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struct stat st;
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default:
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continue;
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case DT_UNKNOWN:
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if (lstat(fullname, &st))
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continue;
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if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode))
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break;
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if (!S_ISDIR(st.st_mode))
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continue;
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/* fallthrough */
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case DT_DIR:
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memcpy(fullname + baselen + len, "/", 2);
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len++;
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if (show_other_directories &&
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!dir_exists(fullname, baselen + len))
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break;
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read_directory(fullname, fullname,
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baselen + len);
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continue;
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case DT_REG:
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case DT_LNK:
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break;
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}
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add_name(fullname, baselen + len);
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}
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closedir(dir);
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pop_exclude_per_directory(exclude_stk);
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}
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}
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static int cmp_name(const void *p1, const void *p2)
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{
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const struct nond_on_fs *e1 = *(const struct nond_on_fs **)p1;
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const struct nond_on_fs *e2 = *(const struct nond_on_fs **)p2;
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return cache_name_compare(e1->name, e1->len,
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e2->name, e2->len);
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}
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/*
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* Match a pathspec against a filename. The first "len" characters
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* are the common prefix
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*/
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static int match(const char **spec, char *ps_matched,
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const char *filename, int len)
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{
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const char *m;
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while ((m = *spec++) != NULL) {
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int matchlen = strlen(m + len);
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if (!matchlen)
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goto matched;
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if (!strncmp(m + len, filename + len, matchlen)) {
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if (m[len + matchlen - 1] == '/')
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goto matched;
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switch (filename[len + matchlen]) {
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case '/': case '\0':
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goto matched;
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}
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}
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if (!fnmatch(m + len, filename + len, 0))
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goto matched;
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if (ps_matched)
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ps_matched++;
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continue;
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matched:
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if (ps_matched)
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*ps_matched = 1;
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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_dir_entry(const char *tag, struct nond_on_fs *ent)
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{
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int len = prefix_len;
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int offset = prefix_offset;
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if (len >= ent->len)
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die("git-ls-files: internal error - directory entry not superset of prefix");
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if (pathspec && !match(pathspec, ps_matched, ent->name, len))
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return;
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fputs(tag, stdout);
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write_name_quoted("", 0, ent->name + offset, line_terminator, stdout);
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putchar(line_terminator);
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}
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static void show_other_files(void)
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{
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int i;
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for (i = 0; i < nr_dir; i++) {
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/* We should not have a matching entry, but we
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* may have an unmerged entry for this path.
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*/
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struct nond_on_fs *ent = dir[i];
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int pos = cache_name_pos(ent->name, ent->len);
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struct cache_entry *ce;
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if (0 <= pos)
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die("bug in show-other-files");
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pos = -pos - 1;
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if (pos < active_nr) {
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ce = active_cache[pos];
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if (ce_namelen(ce) == ent->len &&
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!memcmp(ce->name, ent->name, ent->len))
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continue; /* Yup, this one exists unmerged */
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}
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show_dir_entry(tag_other, ent);
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}
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}
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static void show_killed_files(void)
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{
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int i;
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for (i = 0; i < nr_dir; i++) {
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struct nond_on_fs *ent = dir[i];
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char *cp, *sp;
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int pos, len, killed = 0;
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for (cp = ent->name; cp - ent->name < ent->len; cp = sp + 1) {
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sp = strchr(cp, '/');
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if (!sp) {
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/* If ent->name is prefix of an entry in the
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* cache, it will be killed.
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*/
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pos = cache_name_pos(ent->name, ent->len);
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if (0 <= pos)
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die("bug in show-killed-files");
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pos = -pos - 1;
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while (pos < active_nr &&
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ce_stage(active_cache[pos]))
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pos++; /* skip unmerged */
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if (active_nr <= pos)
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break;
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/* pos points at a name immediately after
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* ent->name in the cache. Does it expect
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* ent->name to be a directory?
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*/
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len = ce_namelen(active_cache[pos]);
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if ((ent->len < len) &&
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!strncmp(active_cache[pos]->name,
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ent->name, ent->len) &&
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active_cache[pos]->name[ent->len] == '/')
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killed = 1;
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break;
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}
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if (0 <= cache_name_pos(ent->name, sp - ent->name)) {
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/* If any of the leading directories in
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* ent->name is registered in the cache,
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* ent->name will be killed.
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*/
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killed = 1;
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break;
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}
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}
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if (killed)
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show_dir_entry(tag_killed, dir[i]);
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}
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}
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static void show_ce_entry(const char *tag, struct cache_entry *ce)
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{
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int len = prefix_len;
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int offset = prefix_offset;
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if (len >= ce_namelen(ce))
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die("git-ls-files: internal error - cache entry not superset of prefix");
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if (pathspec && !match(pathspec, ps_matched, ce->name, len))
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return;
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if (!show_stage) {
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fputs(tag, stdout);
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write_name_quoted("", 0, ce->name + offset,
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line_terminator, stdout);
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putchar(line_terminator);
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}
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else {
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printf("%s%06o %s %d\t",
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tag,
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ntohl(ce->ce_mode),
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sha1_to_hex(ce->sha1),
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ce_stage(ce));
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write_name_quoted("", 0, ce->name + offset,
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line_terminator, stdout);
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putchar(line_terminator);
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}
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}
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static void show_files(void)
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{
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int i;
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/* For cached/deleted files we don't need to even do the readdir */
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if (show_others || show_killed) {
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const char *path = ".", *base = "";
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int baselen = prefix_len;
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if (baselen) {
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path = base = prefix;
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if (exclude_per_dir) {
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char *p, *pp = xmalloc(baselen+1);
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memcpy(pp, prefix, baselen+1);
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p = pp;
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while (1) {
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char save = *p;
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*p = 0;
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push_exclude_per_directory(pp, p-pp);
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*p++ = save;
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if (!save)
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break;
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p = strchr(p, '/');
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if (p)
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p++;
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else
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p = pp + baselen;
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}
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free(pp);
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}
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}
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read_directory(path, base, baselen);
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qsort(dir, nr_dir, sizeof(struct nond_on_fs *), cmp_name);
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if (show_others)
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show_other_files();
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if (show_killed)
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show_killed_files();
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}
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if (show_cached | show_stage) {
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for (i = 0; i < active_nr; i++) {
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struct cache_entry *ce = active_cache[i];
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if (excluded(ce->name) != show_ignored)
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continue;
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if (show_unmerged && !ce_stage(ce))
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continue;
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show_ce_entry(ce_stage(ce) ? tag_unmerged : tag_cached, ce);
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}
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}
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if (show_deleted | show_modified) {
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for (i = 0; i < active_nr; i++) {
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struct cache_entry *ce = active_cache[i];
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struct stat st;
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int err;
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if (excluded(ce->name) != show_ignored)
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continue;
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err = lstat(ce->name, &st);
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if (show_deleted && err)
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show_ce_entry(tag_removed, ce);
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if (show_modified && ce_modified(ce, &st))
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show_ce_entry(tag_modified, ce);
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}
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}
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}
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/*
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* Prune the index to only contain stuff starting with "prefix"
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*/
|
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static void prune_cache(void)
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{
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int pos = cache_name_pos(prefix, prefix_len);
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|
unsigned int first, last;
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|
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if (pos < 0)
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|
pos = -pos-1;
|
|
active_cache += pos;
|
|
active_nr -= pos;
|
|
first = 0;
|
|
last = active_nr;
|
|
while (last > first) {
|
|
int next = (last + first) >> 1;
|
|
struct cache_entry *ce = active_cache[next];
|
|
if (!strncmp(ce->name, prefix, prefix_len)) {
|
|
first = next+1;
|
|
continue;
|
|
}
|
|
last = next;
|
|
}
|
|
active_nr = last;
|
|
}
|
|
|
|
static void verify_pathspec(void)
|
|
{
|
|
const char **p, *n, *prev;
|
|
char *real_prefix;
|
|
unsigned long max;
|
|
|
|
prev = NULL;
|
|
max = PATH_MAX;
|
|
for (p = pathspec; (n = *p) != NULL; p++) {
|
|
int i, len = 0;
|
|
for (i = 0; i < max; i++) {
|
|
char c = n[i];
|
|
if (prev && prev[i] != c)
|
|
break;
|
|
if (!c || c == '*' || c == '?')
|
|
break;
|
|
if (c == '/')
|
|
len = i+1;
|
|
}
|
|
prev = n;
|
|
if (len < max) {
|
|
max = len;
|
|
if (!max)
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (prefix_offset > max || memcmp(prev, prefix, prefix_offset))
|
|
die("git-ls-files: cannot generate relative filenames containing '..'");
|
|
|
|
real_prefix = NULL;
|
|
prefix_len = max;
|
|
if (max) {
|
|
real_prefix = xmalloc(max + 1);
|
|
memcpy(real_prefix, prev, max);
|
|
real_prefix[max] = 0;
|
|
}
|
|
prefix = real_prefix;
|
|
}
|
|
|
|
static const char ls_files_usage[] =
|
|
"git-ls-files [-z] [-t] (--[cached|deleted|others|stage|unmerged|killed|modified])* "
|
|
"[ --ignored ] [--exclude=<pattern>] [--exclude-from=<file>] "
|
|
"[ --exclude-per-directory=<filename> ] [--full-name] [--] [<file>]*";
|
|
|
|
int main(int argc, const char **argv)
|
|
{
|
|
int i;
|
|
int exc_given = 0;
|
|
|
|
prefix = setup_git_directory();
|
|
if (prefix)
|
|
prefix_offset = strlen(prefix);
|
|
git_config(git_default_config);
|
|
|
|
for (i = 1; i < argc; i++) {
|
|
const char *arg = argv[i];
|
|
|
|
if (!strcmp(arg, "--")) {
|
|
i++;
|
|
break;
|
|
}
|
|
if (!strcmp(arg, "-z")) {
|
|
line_terminator = 0;
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "-t")) {
|
|
tag_cached = "H ";
|
|
tag_unmerged = "M ";
|
|
tag_removed = "R ";
|
|
tag_modified = "C ";
|
|
tag_other = "? ";
|
|
tag_killed = "K ";
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "-c") || !strcmp(arg, "--cached")) {
|
|
show_cached = 1;
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "-d") || !strcmp(arg, "--deleted")) {
|
|
show_deleted = 1;
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "-m") || !strcmp(arg, "--modified")) {
|
|
show_modified = 1;
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "-o") || !strcmp(arg, "--others")) {
|
|
show_others = 1;
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "-i") || !strcmp(arg, "--ignored")) {
|
|
show_ignored = 1;
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "-s") || !strcmp(arg, "--stage")) {
|
|
show_stage = 1;
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "-k") || !strcmp(arg, "--killed")) {
|
|
show_killed = 1;
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "--directory")) {
|
|
show_other_directories = 1;
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "-u") || !strcmp(arg, "--unmerged")) {
|
|
/* There's no point in showing unmerged unless
|
|
* you also show the stage information.
|
|
*/
|
|
show_stage = 1;
|
|
show_unmerged = 1;
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "-x") && i+1 < argc) {
|
|
exc_given = 1;
|
|
add_exclude(argv[++i], "", 0, &exclude_list[EXC_CMDL]);
|
|
continue;
|
|
}
|
|
if (!strncmp(arg, "--exclude=", 10)) {
|
|
exc_given = 1;
|
|
add_exclude(arg+10, "", 0, &exclude_list[EXC_CMDL]);
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "-X") && i+1 < argc) {
|
|
exc_given = 1;
|
|
add_excludes_from_file(argv[++i]);
|
|
continue;
|
|
}
|
|
if (!strncmp(arg, "--exclude-from=", 15)) {
|
|
exc_given = 1;
|
|
add_excludes_from_file(arg+15);
|
|
continue;
|
|
}
|
|
if (!strncmp(arg, "--exclude-per-directory=", 24)) {
|
|
exc_given = 1;
|
|
exclude_per_dir = arg + 24;
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "--full-name")) {
|
|
prefix_offset = 0;
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "--error-unmatch")) {
|
|
error_unmatch = 1;
|
|
continue;
|
|
}
|
|
if (*arg == '-')
|
|
usage(ls_files_usage);
|
|
break;
|
|
}
|
|
|
|
pathspec = get_pathspec(prefix, argv + i);
|
|
|
|
/* Verify that the pathspec matches the prefix */
|
|
if (pathspec)
|
|
verify_pathspec();
|
|
|
|
/* Treat unmatching pathspec elements as errors */
|
|
if (pathspec && error_unmatch) {
|
|
int num;
|
|
for (num = 0; pathspec[num]; num++)
|
|
;
|
|
ps_matched = xcalloc(1, num);
|
|
}
|
|
|
|
if (show_ignored && !exc_given) {
|
|
fprintf(stderr, "%s: --ignored needs some exclude pattern\n",
|
|
argv[0]);
|
|
exit(1);
|
|
}
|
|
|
|
/* With no flags, we default to showing the cached files */
|
|
if (!(show_stage | show_deleted | show_others | show_unmerged |
|
|
show_killed | show_modified))
|
|
show_cached = 1;
|
|
|
|
read_cache();
|
|
if (prefix)
|
|
prune_cache();
|
|
show_files();
|
|
|
|
if (ps_matched) {
|
|
/* We need to make sure all pathspec matched otherwise
|
|
* it is an error.
|
|
*/
|
|
int num, errors = 0;
|
|
for (num = 0; pathspec[num]; num++) {
|
|
if (ps_matched[num])
|
|
continue;
|
|
error("pathspec '%s' did not match any.",
|
|
pathspec[num] + prefix_offset);
|
|
}
|
|
return errors ? 1 : 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|