Builtin git-cat-file

Signed-off-by: Timo Hirvonen <tihirvon@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/Makefile b/Makefile
index 7e6517f62bfbb2f8846fe7b2a1a1bf522db3b4f5..dbf19c62775e1a129575fce5281b1a00fb71cdbc 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -149,7 +149,6 @@ SIMPLE_PROGRAMS = \
 
 # ... and all the rest that could be moved out of bindir to gitexecdir
 PROGRAMS = \
-       git-cat-file$X \
        git-checkout-index$X git-clone-pack$X \
        git-convert-objects$X git-fetch-pack$X git-fsck-objects$X \
        git-hash-object$X git-index-pack$X git-local-fetch$X \
@@ -174,7 +173,7 @@ BUILT_INS = git-log$X git-whatchanged$X git-show$X \
        git-ls-files$X git-ls-tree$X \
        git-read-tree$X git-commit-tree$X \
        git-apply$X git-show-branch$X git-diff-files$X \
-       git-diff-index$X git-diff-stages$X git-diff-tree$X
+       git-diff-index$X git-diff-stages$X git-diff-tree$X git-cat-file$X
 
 # what 'all' will build and 'install' will install, in gitexecdir
 ALL_PROGRAMS = $(PROGRAMS) $(SIMPLE_PROGRAMS) $(SCRIPTS)
@@ -228,7 +227,8 @@ BUILTIN_OBJS = \
        builtin-ls-files.o builtin-ls-tree.o \
        builtin-read-tree.o builtin-commit-tree.o \
        builtin-apply.o builtin-show-branch.o builtin-diff-files.o \
-       builtin-diff-index.o builtin-diff-stages.o builtin-diff-tree.o
+       builtin-diff-index.o builtin-diff-stages.o builtin-diff-tree.o \
+       builtin-cat-file.o
 
 GITLIBS = $(LIB_FILE) $(XDIFF_LIB)
 LIBS = $(GITLIBS) -lz

diff --git a/builtin-cat-file.c b/builtin-cat-file.c
new file mode 100644 (file)
index 0000000..8ab136e
--- /dev/null
+++ b/builtin-cat-file.c
@@ -0,0 +1,167 @@
+/*
+ * GIT - The information manager from hell
+ *
+ * Copyright (C) Linus Torvalds, 2005
+ */
+#include "cache.h"
+#include "exec_cmd.h"
+#include "tag.h"
+#include "tree.h"
+#include "builtin.h"
+
+static void flush_buffer(const char *buf, unsigned long size)
+{
+       while (size > 0) {
+               long ret = xwrite(1, buf, size);
+               if (ret < 0) {
+                       /* Ignore epipe */
+                       if (errno == EPIPE)
+                               break;
+                       die("git-cat-file: %s", strerror(errno));
+               } else if (!ret) {
+                       die("git-cat-file: disk full?");
+               }
+               size -= ret;
+               buf += ret;
+       }
+}
+
+static int pprint_tag(const unsigned char *sha1, const char *buf, unsigned long size)
+{
+       /* the parser in tag.c is useless here. */
+       const char *endp = buf + size;
+       const char *cp = buf;
+
+       while (cp < endp) {
+               char c = *cp++;
+               if (c != '\n')
+                       continue;
+               if (7 <= endp - cp && !memcmp("tagger ", cp, 7)) {
+                       const char *tagger = cp;
+
+                       /* Found the tagger line.  Copy out the contents
+                        * of the buffer so far.
+                        */
+                       flush_buffer(buf, cp - buf);
+
+                       /*
+                        * Do something intelligent, like pretty-printing
+                        * the date.
+                        */
+                       while (cp < endp) {
+                               if (*cp++ == '\n') {
+                                       /* tagger to cp is a line
+                                        * that has ident and time.
+                                        */
+                                       const char *sp = tagger;
+                                       char *ep;
+                                       unsigned long date;
+                                       long tz;
+                                       while (sp < cp && *sp != '>')
+                                               sp++;
+                                       if (sp == cp) {
+                                               /* give up */
+                                               flush_buffer(tagger,
+                                                            cp - tagger);
+                                               break;
+                                       }
+                                       while (sp < cp &&
+                                              !('0' <= *sp && *sp <= '9'))
+                                               sp++;
+                                       flush_buffer(tagger, sp - tagger);
+                                       date = strtoul(sp, &ep, 10);
+                                       tz = strtol(ep, NULL, 10);
+                                       sp = show_date(date, tz);
+                                       flush_buffer(sp, strlen(sp));
+                                       xwrite(1, "\n", 1);
+                                       break;
+                               }
+                       }
+                       break;
+               }
+               if (cp < endp && *cp == '\n')
+                       /* end of header */
+                       break;
+       }
+       /* At this point, we have copied out the header up to the end of
+        * the tagger line and cp points at one past \n.  It could be the
+        * next header line after the tagger line, or it could be another
+        * \n that marks the end of the headers.  We need to copy out the
+        * remainder as is.
+        */
+       if (cp < endp)
+               flush_buffer(cp, endp - cp);
+       return 0;
+}
+
+int cmd_cat_file(int argc, const char **argv, char **envp)
+{
+       unsigned char sha1[20];
+       char type[20];
+       void *buf;
+       unsigned long size;
+       int opt;
+
+       setup_git_directory();
+       git_config(git_default_config);
+       if (argc != 3)
+               usage("git-cat-file [-t|-s|-e|-p|<type>] <sha1>");
+       if (get_sha1(argv[2], sha1))
+               die("Not a valid object name %s", argv[2]);
+
+       opt = 0;
+       if ( argv[1][0] == '-' ) {
+               opt = argv[1][1];
+               if ( !opt || argv[1][2] )
+                       opt = -1; /* Not a single character option */
+       }
+
+       buf = NULL;
+       switch (opt) {
+       case 't':
+               if (!sha1_object_info(sha1, type, NULL)) {
+                       printf("%s\n", type);
+                       return 0;
+               }
+               break;
+
+       case 's':
+               if (!sha1_object_info(sha1, type, &size)) {
+                       printf("%lu\n", size);
+                       return 0;
+               }
+               break;
+
+       case 'e':
+               return !has_sha1_file(sha1);
+
+       case 'p':
+               if (sha1_object_info(sha1, type, NULL))
+                       die("Not a valid object name %s", argv[2]);
+
+               /* custom pretty-print here */
+               if (!strcmp(type, tree_type))
+                       return execl_git_cmd("ls-tree", argv[2], NULL);
+
+               buf = read_sha1_file(sha1, type, &size);
+               if (!buf)
+                       die("Cannot read object %s", argv[2]);
+               if (!strcmp(type, tag_type))
+                       return pprint_tag(sha1, buf, size);
+
+               /* otherwise just spit out the data */
+               break;
+       case 0:
+               buf = read_object_with_reference(sha1, argv[1], &size, NULL);
+               break;
+
+       default:
+               die("git-cat-file: unknown option: %s\n", argv[1]);
+       }
+
+       if (!buf)
+               die("git-cat-file %s: bad file", argv[2]);
+
+       flush_buffer(buf, size);
+       return 0;
+}

diff --git a/builtin.h b/builtin.h
index 714b97578cb62db7be247c4e799fcd9a946cc76c..738ec3d9453886b1b011b5e01e9ac71b25d8f06f 100644 (file)
--- a/builtin.h
+++ b/builtin.h
@@ -42,5 +42,6 @@ extern int cmd_diff_files(int argc, const char **argv, char **envp);
 extern int cmd_diff_index(int argc, const char **argv, char **envp);
 extern int cmd_diff_stages(int argc, const char **argv, char **envp);
 extern int cmd_diff_tree(int argc, const char **argv, char **envp);
+extern int cmd_cat_file(int argc, const char **argv, char **envp);
 
 #endif

diff --git a/cat-file.c b/cat-file.c
deleted file mode 100644 (file)
index 7413fee..0000000
--- a/cat-file.c
+++ /dev/null
@@ -1,166 +0,0 @@
-/*
- * GIT - The information manager from hell
- *
- * Copyright (C) Linus Torvalds, 2005
- */
-#include "cache.h"
-#include "exec_cmd.h"
-#include "tag.h"
-#include "tree.h"
-
-static void flush_buffer(const char *buf, unsigned long size)
-{
-       while (size > 0) {
-               long ret = xwrite(1, buf, size);
-               if (ret < 0) {
-                       /* Ignore epipe */
-                       if (errno == EPIPE)
-                               break;
-                       die("git-cat-file: %s", strerror(errno));
-               } else if (!ret) {
-                       die("git-cat-file: disk full?");
-               }
-               size -= ret;
-               buf += ret;
-       }
-}
-
-static int pprint_tag(const unsigned char *sha1, const char *buf, unsigned long size)
-{
-       /* the parser in tag.c is useless here. */
-       const char *endp = buf + size;
-       const char *cp = buf;
-
-       while (cp < endp) {
-               char c = *cp++;
-               if (c != '\n')
-                       continue;
-               if (7 <= endp - cp && !memcmp("tagger ", cp, 7)) {
-                       const char *tagger = cp;
-
-                       /* Found the tagger line.  Copy out the contents
-                        * of the buffer so far.
-                        */
-                       flush_buffer(buf, cp - buf);
-
-                       /*
-                        * Do something intelligent, like pretty-printing
-                        * the date.
-                        */
-                       while (cp < endp) {
-                               if (*cp++ == '\n') {
-                                       /* tagger to cp is a line
-                                        * that has ident and time.
-                                        */
-                                       const char *sp = tagger;
-                                       char *ep;
-                                       unsigned long date;
-                                       long tz;
-                                       while (sp < cp && *sp != '>')
-                                               sp++;
-                                       if (sp == cp) {
-                                               /* give up */
-                                               flush_buffer(tagger,
-                                                            cp - tagger);
-                                               break;
-                                       }
-                                       while (sp < cp &&
-                                              !('0' <= *sp && *sp <= '9'))
-                                               sp++;
-                                       flush_buffer(tagger, sp - tagger);
-                                       date = strtoul(sp, &ep, 10);
-                                       tz = strtol(ep, NULL, 10);
-                                       sp = show_date(date, tz);
-                                       flush_buffer(sp, strlen(sp));
-                                       xwrite(1, "\n", 1);
-                                       break;
-                               }
-                       }
-                       break;
-               }
-               if (cp < endp && *cp == '\n')
-                       /* end of header */
-                       break;
-       }
-       /* At this point, we have copied out the header up to the end of
-        * the tagger line and cp points at one past \n.  It could be the
-        * next header line after the tagger line, or it could be another
-        * \n that marks the end of the headers.  We need to copy out the
-        * remainder as is.
-        */
-       if (cp < endp)
-               flush_buffer(cp, endp - cp);
-       return 0;
-}
-
-int main(int argc, char **argv)
-{
-       unsigned char sha1[20];
-       char type[20];
-       void *buf;
-       unsigned long size;
-       int opt;
-
-       setup_git_directory();
-       git_config(git_default_config);
-       if (argc != 3)
-               usage("git-cat-file [-t|-s|-e|-p|<type>] <sha1>");
-       if (get_sha1(argv[2], sha1))
-               die("Not a valid object name %s", argv[2]);
-
-       opt = 0;
-       if ( argv[1][0] == '-' ) {
-               opt = argv[1][1];
-               if ( !opt || argv[1][2] )
-                       opt = -1; /* Not a single character option */
-       }
-
-       buf = NULL;
-       switch (opt) {
-       case 't':
-               if (!sha1_object_info(sha1, type, NULL)) {
-                       printf("%s\n", type);
-                       return 0;
-               }
-               break;
-
-       case 's':
-               if (!sha1_object_info(sha1, type, &size)) {
-                       printf("%lu\n", size);
-                       return 0;
-               }
-               break;
-
-       case 'e':
-               return !has_sha1_file(sha1);
-
-       case 'p':
-               if (sha1_object_info(sha1, type, NULL))
-                       die("Not a valid object name %s", argv[2]);
-
-               /* custom pretty-print here */
-               if (!strcmp(type, tree_type))
-                       return execl_git_cmd("ls-tree", argv[2], NULL);
-
-               buf = read_sha1_file(sha1, type, &size);
-               if (!buf)
-                       die("Cannot read object %s", argv[2]);
-               if (!strcmp(type, tag_type))
-                       return pprint_tag(sha1, buf, size);
-
-               /* otherwise just spit out the data */
-               break;
-       case 0:
-               buf = read_object_with_reference(sha1, argv[1], &size, NULL);
-               break;
-
-       default:
-               die("git-cat-file: unknown option: %s\n", argv[1]);
-       }
-
-       if (!buf)
-               die("git-cat-file %s: bad file", argv[2]);
-
-       flush_buffer(buf, size);
-       return 0;
-}

diff --git a/git.c b/git.c
index 5a884bb07a2bf41691f6e568c6877faab17961e7..10ea934bcf3271797e7087e909978d1b4d3a0ea5 100644 (file)
--- a/git.c
+++ b/git.c
@@ -68,7 +68,8 @@ static void handle_internal_command(int argc, const char **argv, char **envp)
                { "diff-files", cmd_diff_files },
                { "diff-index", cmd_diff_index },
                { "diff-stages", cmd_diff_stages },
-               { "diff-tree", cmd_diff_tree }
+               { "diff-tree", cmd_diff_tree },
+               { "cat-file", cmd_cat_file }
        };
        int i;