diff options
| -rw-r--r-- | Makefile | 2 | ||||
| -rw-r--r-- | cache.h | 11 | ||||
| -rw-r--r-- | checkout-cache.c | 193 | ||||
| -rw-r--r-- | entry.c | 160 |
4 files changed, 192 insertions, 174 deletions
@@ -40,7 +40,7 @@ install: $(PROG) $(SCRIPTS) $(INSTALL) $(PROG) $(SCRIPTS) $(dest)$(bin) LIB_OBJS=read-cache.o sha1_file.o usage.o object.o commit.o tree.o blob.o \ - tag.o delta.o date.o index.o diff-delta.o patch-delta.o + tag.o delta.o date.o index.o diff-delta.o patch-delta.o entry.o LIB_FILE=libgit.a LIB_H=cache.h object.h blob.h tree.h commit.h tag.h delta.h @@ -214,4 +214,15 @@ static inline void *xcalloc(size_t nmemb, size_t size) return ret; } +struct checkout { + const char *base_dir; + int base_dir_len; + unsigned force:1, + quiet:1, + not_new:1, + refresh_cache:1; +}; + +extern int checkout_entry(struct cache_entry *ce, struct checkout *state); + #endif /* CACHE_H */ diff --git a/checkout-cache.c b/checkout-cache.c index 9d09c39..82ddbe4 100644 --- a/checkout-cache.c +++ b/checkout-cache.c @@ -32,175 +32,22 @@ * of "-a" causing problems (not possible in the above example, * but get used to it in scripting!). */ -#include <sys/types.h> -#include <dirent.h> #include "cache.h" -static int force = 0, quiet = 0, not_new = 0, refresh_cache = 0; -static const char *base_dir = ""; -static int base_dir_len = 0; - -static void create_directories(const char *path) -{ - int len = strlen(path); - char *buf = xmalloc(len + 1); - const char *slash = path; - - while ((slash = strchr(slash+1, '/')) != NULL) { - len = slash - path; - memcpy(buf, path, len); - buf[len] = 0; - if (mkdir(buf, 0755)) { - if (errno == EEXIST) { - struct stat st; - if (len > base_dir_len && force && !unlink(buf) && !mkdir(buf, 0755)) - continue; - if (!stat(buf, &st) && S_ISDIR(st.st_mode)) - continue; /* ok */ - } - die("cannot create directory at %s", buf); - } - } - free(buf); -} - -static void remove_subtree(const char *path) -{ - DIR *dir = opendir(path); - struct dirent *de; - char pathbuf[PATH_MAX]; - char *name; - - if (!dir) - die("cannot opendir %s", path); - strcpy(pathbuf, path); - name = pathbuf + strlen(path); - *name++ = '/'; - while ((de = readdir(dir)) != NULL) { - struct stat st; - if ((de->d_name[0] == '.') && - ((de->d_name[1] == 0) || - ((de->d_name[1] == '.') && de->d_name[2] == 0))) - continue; - strcpy(name, de->d_name); - if (lstat(pathbuf, &st)) - die("cannot lstat %s", pathbuf); - if (S_ISDIR(st.st_mode)) - remove_subtree(pathbuf); - else if (unlink(pathbuf)) - die("cannot unlink %s", pathbuf); - } - closedir(dir); - if (rmdir(path)) - die("cannot rmdir %s", path); -} - -static int create_file(const char *path, unsigned int mode) -{ - int fd; - - mode = (mode & 0100) ? 0777 : 0666; - create_directories(path); - fd = open(path, O_WRONLY | O_TRUNC | O_CREAT, mode); - if (fd < 0) { - if (errno == EISDIR && force) { - remove_subtree(path); - fd = open(path, O_WRONLY | O_TRUNC | O_CREAT, mode); - } - } - return fd; -} - -static int write_entry(struct cache_entry *ce, const char *path) -{ - int fd; - void *new; - unsigned long size; - long wrote; - char type[20]; - char target[1024]; - - new = read_sha1_file(ce->sha1, type, &size); - if (!new || strcmp(type, "blob")) { - if (new) - free(new); - return error("git-checkout-cache: unable to read sha1 file of %s (%s)", - path, sha1_to_hex(ce->sha1)); - } - switch (ntohl(ce->ce_mode) & S_IFMT) { - case S_IFREG: - fd = create_file(path, ntohl(ce->ce_mode)); - if (fd < 0) { - free(new); - return error("git-checkout-cache: unable to create file %s (%s)", - path, strerror(errno)); - } - wrote = write(fd, new, size); - close(fd); - free(new); - if (wrote != size) - return error("git-checkout-cache: unable to write file %s", path); - break; - case S_IFLNK: - memcpy(target, new, size); - target[size] = '\0'; - create_directories(path); - if (symlink(target, path)) { - free(new); - return error("git-checkout-cache: unable to create symlink %s (%s)", - path, strerror(errno)); - } - free(new); - break; - default: - free(new); - return error("git-checkout-cache: unknown file mode for %s", path); - } - - if (refresh_cache) { - struct stat st; - lstat(ce->name, &st); - fill_stat_cache_info(ce, &st); - } - return 0; -} - -static int checkout_entry(struct cache_entry *ce) -{ - struct stat st; - static char path[MAXPATHLEN+1]; - int len = base_dir_len; - - memcpy(path, base_dir, len); - strcpy(path + len, ce->name); - - if (!lstat(path, &st)) { - unsigned changed = ce_match_stat(ce, &st); - if (!changed) - return 0; - if (!force) { - if (!quiet) - fprintf(stderr, "git-checkout-cache: %s already exists\n", path); - return 0; - } - - /* - * We unlink the old file, to get the new one with the - * right permissions (including umask, which is nasty - * to emulate by hand - much easier to let the system - * just do the right thing) - */ - unlink(path); - } else if (not_new) - return 0; - return write_entry(ce, path); -} +static struct checkout state = { + .base_dir = "", + .base_dir_len = 0, + .force = 0, + .quiet = 0, + .not_new = 0, + .refresh_cache = 0, +}; static int checkout_file(const char *name) { int pos = cache_name_pos(name, strlen(name)); if (pos < 0) { - if (!quiet) { + if (!state.quiet) { pos = -pos - 1; fprintf(stderr, "git-checkout-cache: %s is %s.\n", @@ -211,7 +58,7 @@ static int checkout_file(const char *name) } return -1; } - return checkout_entry(active_cache[pos]); + return checkout_entry(active_cache[pos], &state); } static int checkout_all(void) @@ -222,7 +69,7 @@ static int checkout_all(void) struct cache_entry *ce = active_cache[i]; if (ce_stage(ce)) continue; - if (checkout_entry(ce) < 0) + if (checkout_entry(ce, &state) < 0) return -1; } return 0; @@ -250,19 +97,19 @@ int main(int argc, char **argv) continue; } if (!strcmp(arg, "-f")) { - force = 1; + state.force = 1; continue; } if (!strcmp(arg, "-q")) { - quiet = 1; + state.quiet = 1; continue; } if (!strcmp(arg, "-n")) { - not_new = 1; + state.not_new = 1; continue; } if (!strcmp(arg, "-u")) { - refresh_cache = 1; + state.refresh_cache = 1; if (newfd < 0) newfd = hold_index_file_for_update (&cache_file, @@ -272,20 +119,20 @@ int main(int argc, char **argv) continue; } if (!memcmp(arg, "--prefix=", 9)) { - base_dir = arg+9; - base_dir_len = strlen(base_dir); + state.base_dir = arg+9; + state.base_dir_len = strlen(state.base_dir); continue; } } - if (base_dir_len) { + if (state.base_dir_len) { /* when --prefix is specified we do not * want to update cache. */ - if (refresh_cache) { + if (state.refresh_cache) { close(newfd); newfd = -1; rollback_index_file(&cache_file); } - refresh_cache = 0; + state.refresh_cache = 0; } checkout_file(arg); } @@ -0,0 +1,160 @@ +#include <sys/types.h> +#include <dirent.h> +#include "cache.h" + +static void create_directories(const char *path, struct checkout *state) +{ + int len = strlen(path); + char *buf = xmalloc(len + 1); + const char *slash = path; + + while ((slash = strchr(slash+1, '/')) != NULL) { + len = slash - path; + memcpy(buf, path, len); + buf[len] = 0; + if (mkdir(buf, 0755)) { + if (errno == EEXIST) { + struct stat st; + if (len > state->base_dir_len && state->force && !unlink(buf) && !mkdir(buf, 0755)) + continue; + if (!stat(buf, &st) && S_ISDIR(st.st_mode)) + continue; /* ok */ + } + die("cannot create directory at %s", buf); + } + } + free(buf); +} + +static void remove_subtree(const char *path) +{ + DIR *dir = opendir(path); + struct dirent *de; + char pathbuf[PATH_MAX]; + char *name; + + if (!dir) + die("cannot opendir %s", path); + strcpy(pathbuf, path); + name = pathbuf + strlen(path); + *name++ = '/'; + while ((de = readdir(dir)) != NULL) { + struct stat st; + if ((de->d_name[0] == '.') && + ((de->d_name[1] == 0) || + ((de->d_name[1] == '.') && de->d_name[2] == 0))) + continue; + strcpy(name, de->d_name); + if (lstat(pathbuf, &st)) + die("cannot lstat %s", pathbuf); + if (S_ISDIR(st.st_mode)) + remove_subtree(pathbuf); + else if (unlink(pathbuf)) + die("cannot unlink %s", pathbuf); + } + closedir(dir); + if (rmdir(path)) + die("cannot rmdir %s", path); +} + +static int create_file(const char *path, unsigned int mode, int force) +{ + int fd; + + mode = (mode & 0100) ? 0777 : 0666; + fd = open(path, O_WRONLY | O_TRUNC | O_CREAT, mode); + if (fd < 0) { + if (errno == EISDIR && force) { + remove_subtree(path); + fd = open(path, O_WRONLY | O_TRUNC | O_CREAT, mode); + } + } + return fd; +} + +static int write_entry(struct cache_entry *ce, const char *path, struct checkout *state) +{ + int fd; + void *new; + unsigned long size; + long wrote; + char type[20]; + char target[1024]; + + new = read_sha1_file(ce->sha1, type, &size); + if (!new || strcmp(type, "blob")) { + if (new) + free(new); + return error("git-checkout-cache: unable to read sha1 file of %s (%s)", + path, sha1_to_hex(ce->sha1)); + } + switch (ntohl(ce->ce_mode) & S_IFMT) { + case S_IFREG: + fd = create_file(path, ntohl(ce->ce_mode), state->force); + if (fd < 0) { + free(new); + return error("git-checkout-cache: unable to create file %s (%s)", + path, strerror(errno)); + } + wrote = write(fd, new, size); + close(fd); + free(new); + if (wrote != size) + return error("git-checkout-cache: unable to write file %s", path); + break; + case S_IFLNK: + memcpy(target, new, size); + target[size] = '\0'; + if (symlink(target, path)) { + free(new); + return error("git-checkout-cache: unable to create symlink %s (%s)", + path, strerror(errno)); + } + free(new); + break; + default: + free(new); + return error("git-checkout-cache: unknown file mode for %s", path); + } + + if (state->update) { + struct stat st; + lstat(ce->name, &st); + fill_stat_cache_info(ce, &st); + } + return 0; +} + +int checkout_entry(struct cache_entry *ce, struct checkout *state) +{ + struct stat st; + static char path[MAXPATHLEN+1]; + int len = state->base_dir_len; + + memcpy(path, state->base_dir, len); + strcpy(path + len, ce->name); + + if (!lstat(path, &st)) { + unsigned changed = ce_match_stat(ce, &st); + if (!changed) + return 0; + if (!state->force) { + if (!state->quiet) + fprintf(stderr, "git-checkout-cache: %s already exists\n", path); + return 0; + } + + /* + * We unlink the old file, to get the new one with the + * right permissions (including umask, which is nasty + * to emulate by hand - much easier to let the system + * just do the right thing) + */ + unlink(path); + } else if (state->not_new) + return 0; + create_directories(path, state); + return write_entry(ce, path, state); +} + + |