git p4: implement view spec wildcards with "p4 where"

diff --git a/entry.c b/entry.c
index b017167f2015623fb9c721e91d0a940abd1d5196..acc892f9a62b5bc3d3442b044b29bf8d763bf3ba 100644 (file)
--- a/entry.c
+++ b/entry.c
@@ -1,6 +1,7 @@
 #include "cache.h"
 #include "blob.h"
 #include "dir.h"
+#include "streaming.h"
 
 static void create_directories(const char *path, int path_len,
                               const struct checkout *state)
@@ -78,7 +79,7 @@ static int create_file(const char *path, unsigned int mode)
        return open(path, O_WRONLY | O_CREAT | O_EXCL, mode);
 }
 
-static void *read_blob_entry(struct cache_entry *ce, unsigned long *size)
+static void *read_blob_entry(const struct cache_entry *ce, unsigned long *size)
 {
        enum object_type type;
        void *new = read_sha1_file(ce->sha1, &type, size);
@@ -91,7 +92,52 @@ static void *read_blob_entry(struct cache_entry *ce, unsigned long *size)
        return NULL;
 }
 
-static int write_entry(struct cache_entry *ce, char *path, const struct checkout *state, int to_tempfile)
+static int open_output_fd(char *path, const struct cache_entry *ce, int to_tempfile)
+{
+       int symlink = (ce->ce_mode & S_IFMT) != S_IFREG;
+       if (to_tempfile) {
+               strcpy(path, symlink
+                      ? ".merge_link_XXXXXX" : ".merge_file_XXXXXX");
+               return mkstemp(path);
+       } else {
+               return create_file(path, !symlink ? ce->ce_mode : 0666);
+       }
+}
+
+static int fstat_output(int fd, const struct checkout *state, struct stat *st)
+{
+       /* use fstat() only when path == ce->name */
+       if (fstat_is_reliable() &&
+           state->refresh_cache && !state->base_dir_len) {
+               fstat(fd, st);
+               return 1;
+       }
+       return 0;
+}
+
+static int streaming_write_entry(const struct cache_entry *ce, char *path,
+                                struct stream_filter *filter,
+                                const struct checkout *state, int to_tempfile,
+                                int *fstat_done, struct stat *statbuf)
+{
+       int result = 0;
+       int fd;
+
+       fd = open_output_fd(path, ce, to_tempfile);
+       if (fd < 0)
+               return -1;
+
+       result |= stream_blob_to_fd(fd, ce->sha1, filter, 1);
+       *fstat_done = fstat_output(fd, state, statbuf);
+       result |= close(fd);
+
+       if (result)
+               unlink(path);
+       return result;
+}
+
+static int write_entry(struct cache_entry *ce,
+                      char *path, const struct checkout *state, int to_tempfile)
 {
        unsigned int ce_mode_s_ifmt = ce->ce_mode & S_IFMT;
        int fd, ret, fstat_done = 0;
@@ -101,6 +147,15 @@ static int write_entry(struct cache_entry *ce, char *path, const struct checkout
        size_t wrote, newsize = 0;
        struct stat st;
 
+       if (ce_mode_s_ifmt == S_IFREG) {
+               struct stream_filter *filter = get_stream_filter(ce->name, ce->sha1);
+               if (filter &&
+                   !streaming_write_entry(ce, path, filter,
+                                          state, to_tempfile,
+                                          &fstat_done, &st))
+                       goto finish;
+       }
+
        switch (ce_mode_s_ifmt) {
        case S_IFREG:
        case S_IFLNK:
@@ -128,17 +183,7 @@ static int write_entry(struct cache_entry *ce, char *path, const struct checkout
                        size = newsize;
                }
 
-               if (to_tempfile) {
-                       if (ce_mode_s_ifmt == S_IFREG)
-                               strcpy(path, ".merge_file_XXXXXX");
-                       else
-                               strcpy(path, ".merge_link_XXXXXX");
-                       fd = mkstemp(path);
-               } else if (ce_mode_s_ifmt == S_IFREG) {
-                       fd = create_file(path, ce->ce_mode);
-               } else {
-                       fd = create_file(path, 0666);
-               }
+               fd = open_output_fd(path, ce, to_tempfile);
                if (fd < 0) {
                        free(new);
                        return error("unable to create file %s (%s)",
@@ -146,12 +191,8 @@ static int write_entry(struct cache_entry *ce, char *path, const struct checkout
                }
 
                wrote = write_in_full(fd, new, size);
-               /* use fstat() only when path == ce->name */
-               if (fstat_is_reliable() &&
-                   state->refresh_cache && !to_tempfile && !state->base_dir_len) {
-                       fstat(fd, &st);
-                       fstat_done = 1;
-               }
+               if (!to_tempfile)
+                       fstat_done = fstat_output(fd, state, &st);
                close(fd);
                free(new);
                if (wrote != size)
@@ -159,14 +200,15 @@ static int write_entry(struct cache_entry *ce, char *path, const struct checkout
                break;
        case S_IFGITLINK:
                if (to_tempfile)
-                       return error("cannot create temporary subproject %s", path);
+                       return error("cannot create temporary submodule %s", path);
                if (mkdir(path, 0777) < 0)
-                       return error("cannot create subproject directory %s", path);
+                       return error("cannot create submodule directory %s", path);
                break;
        default:
                return error("unknown file mode for %s in index", path);
        }
 
+finish:
        if (state->refresh_cache) {
                if (!fstat_done)
                        lstat(ce->name, &st);
@@ -192,7 +234,8 @@ static int check_path(const char *path, int len, struct stat *st, int skiplen)
        return lstat(path, st);
 }
 
-int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath)
+int checkout_entry(struct cache_entry *ce,
+                  const struct checkout *state, char *topath)
 {
        static char path[PATH_MAX + 1];
        struct stat st;