Document git read-tree --trivial

diff --git a/builtin-ls-tree.c b/builtin-ls-tree.c
index 48385d59f6097258b83ebbf0156e1913043b6928..cb4be4fabb84bafd5518e81d2fd0ed6ee191641c 100644 (file)
--- a/builtin-ls-tree.c
+++ b/builtin-ls-tree.c
@@ -6,6 +6,7 @@
 #include "cache.h"
 #include "blob.h"
 #include "tree.h"
+#include "commit.h"
 #include "quote.h"
 #include "builtin.h"
 
@@ -14,14 +15,15 @@ static int line_termination = '\n';
 #define LS_TREE_ONLY 2
 #define LS_SHOW_TREES 4
 #define LS_NAME_ONLY 8
-static int abbrev = 0;
-static int ls_options = 0;
+#define LS_SHOW_SIZE 16
+static int abbrev;
+static int ls_options;
 static const char **pathspec;
-static int chomp_prefix = 0;
-static const char *prefix;
+static int chomp_prefix;
+static const char *ls_tree_prefix;
 
 static const char ls_tree_usage[] =
-       "git-ls-tree [-d] [-r] [-t] [-z] [--name-only] [--name-status] [--full-name] [--abbrev[=<n>]] <tree-ish> [path...]";
+       "git-ls-tree [-d] [-r] [-t] [-l] [-z] [--name-only] [--name-status] [--full-name] [--abbrev[=<n>]] <tree-ish> [path...]";
 
 static int show_recursive(const char *base, int baselen, const char *pathname)
 {
@@ -53,13 +55,31 @@ static int show_recursive(const char *base, int baselen, const char *pathname)
        }
 }
 
-static int show_tree(unsigned char *sha1, const char *base, int baselen,
+static int show_tree(const unsigned char *sha1, const char *base, int baselen,
                     const char *pathname, unsigned mode, int stage)
 {
        int retval = 0;
        const char *type = blob_type;
-
-       if (S_ISDIR(mode)) {
+       unsigned long size;
+
+       if (S_ISGITLINK(mode)) {
+               /*
+                * Maybe we want to have some recursive version here?
+                *
+                * Something like:
+                *
+               if (show_subprojects(base, baselen, pathname)) {
+                       if (fork()) {
+                               chdir(base);
+                               exec ls-tree;
+                       }
+                       waitpid();
+               }
+                *
+                * ..or similar..
+                */
+               type = commit_type;
+       } else if (S_ISDIR(mode)) {
                if (show_recursive(base, baselen, pathname)) {
                        retval = READ_TREE_RECURSIVE;
                        if (!(ls_options & LS_SHOW_TREES))
@@ -71,13 +91,27 @@ static int show_tree(unsigned char *sha1, const char *base, int baselen,
                return 0;
 
        if (chomp_prefix &&
-           (baselen < chomp_prefix || memcmp(prefix, base, chomp_prefix)))
+           (baselen < chomp_prefix || memcmp(ls_tree_prefix, base, chomp_prefix)))
                return 0;
 
-       if (!(ls_options & LS_NAME_ONLY))
-               printf("%06o %s %s\t", mode, type,
-                               abbrev ? find_unique_abbrev(sha1,abbrev)
-                                       : sha1_to_hex(sha1));
+       if (!(ls_options & LS_NAME_ONLY)) {
+               if (ls_options & LS_SHOW_SIZE) {
+                       if (!strcmp(type, blob_type)) {
+                               sha1_object_info(sha1, &size);
+                               printf("%06o %s %s %7lu\t", mode, type,
+                                      abbrev ? find_unique_abbrev(sha1, abbrev)
+                                             : sha1_to_hex(sha1),
+                                      size);
+                       } else
+                               printf("%06o %s %s %7c\t", mode, type,
+                                      abbrev ? find_unique_abbrev(sha1, abbrev)
+                                             : sha1_to_hex(sha1),
+                                      '-');
+               } else
+                       printf("%06o %s %s\t", mode, type,
+                              abbrev ? find_unique_abbrev(sha1, abbrev)
+                                     : sha1_to_hex(sha1));
+       }
        write_name_quoted(base + chomp_prefix, baselen - chomp_prefix,
                          pathname,
                          line_termination, stdout);
@@ -85,13 +119,13 @@ static int show_tree(unsigned char *sha1, const char *base, int baselen,
        return retval;
 }
 
-int cmd_ls_tree(int argc, const char **argv, char **envp)
+int cmd_ls_tree(int argc, const char **argv, const char *prefix)
 {
        unsigned char sha1[20];
        struct tree *tree;
 
-       prefix = setup_git_directory();
        git_config(git_default_config);
+       ls_tree_prefix = prefix;
        if (prefix && *prefix)
                chomp_prefix = strlen(prefix);
        while (1 < argc && argv[1][0] == '-') {
@@ -108,17 +142,24 @@ int cmd_ls_tree(int argc, const char **argv, char **envp)
                case 't':
                        ls_options |= LS_SHOW_TREES;
                        break;
+               case 'l':
+                       ls_options |= LS_SHOW_SIZE;
+                       break;
                case '-':
                        if (!strcmp(argv[1]+2, "name-only") ||
                            !strcmp(argv[1]+2, "name-status")) {
                                ls_options |= LS_NAME_ONLY;
                                break;
                        }
+                       if (!strcmp(argv[1]+2, "long")) {
+                               ls_options |= LS_SHOW_SIZE;
+                               break;
+                       }
                        if (!strcmp(argv[1]+2, "full-name")) {
                                chomp_prefix = 0;
                                break;
                        }
-                       if (!strncmp(argv[1]+2, "abbrev=",7)) {
+                       if (!prefixcmp(argv[1]+2, "abbrev=")) {
                                abbrev = strtoul(argv[1]+9, NULL, 10);
                                if (abbrev && abbrev < MINIMUM_ABBREV)
                                        abbrev = MINIMUM_ABBREV;