sha1_name: warning ambiguous refs.

[git.git] / git.c

diff --git a/git.c b/git.c
index a547dbd..0b40e30 100644 (file)
--- a/git.c
+++ b/git.c
@@ -11,6 +11,7 @@
 #include <sys/ioctl.h>
 #include "git-compat-util.h"
 #include "exec_cmd.h"
+#include "common-cmds.h"
 
 #include "cache.h"
 #include "commit.h"
@@ -171,11 +172,29 @@ static void list_commands(const char *exec_path, const char *pattern)
        putchar('\n');
 }
 
+static void list_common_cmds_help()
+{
+       int i, longest = 0;
+
+       for (i = 0; i < ARRAY_SIZE(common_cmds); i++) {
+               if (longest < strlen(common_cmds[i].name))
+                       longest = strlen(common_cmds[i].name);
+       }
+
+       puts("The most commonly used git commands are:");
+       for (i = 0; i < ARRAY_SIZE(common_cmds); i++) {
+               printf("    %s", common_cmds[i].name);
+               mput_char(' ', longest - strlen(common_cmds[i].name) + 4);
+               puts(common_cmds[i].help);
+       }
+       puts("(use 'git help -a' to get a list of all installed git commands)");
+}
+
 #ifdef __GNUC__
-static void cmd_usage(const char *exec_path, const char *fmt, ...)
-       __attribute__((__format__(__printf__, 2, 3), __noreturn__));
+static void cmd_usage(int show_all, const char *exec_path, const char *fmt, ...)
+       __attribute__((__format__(__printf__, 3, 4), __noreturn__));
 #endif
-static void cmd_usage(const char *exec_path, const char *fmt, ...)
+static void cmd_usage(int show_all, const char *exec_path, const char *fmt, ...)
 {
        if (fmt) {
                va_list ap;
@@ -189,10 +208,13 @@ static void cmd_usage(const char *exec_path, const char *fmt, ...)
        else
                puts(git_usage);
 
-       putchar('\n');
-
-       if(exec_path)
-               list_commands(exec_path, "git-*");
+       if (exec_path) {
+               putchar('\n');
+               if (show_all)
+                       list_commands(exec_path, "git-*");
+               else
+                       list_common_cmds_help();
+        }
 
        exit(1);
 }
@@ -216,42 +238,45 @@ static void prepend_to_path(const char *dir, int len)
        setenv("PATH", path, 1);
 }
 
-static void show_man_page(char *git_cmd)
+static void show_man_page(const char *git_cmd)
 {
-       char *page;
+       const char *page;
 
        if (!strncmp(git_cmd, "git", 3))
                page = git_cmd;
        else {
                int page_len = strlen(git_cmd) + 4;
-
-               page = malloc(page_len + 1);
-               strcpy(page, "git-");
-               strcpy(page + 4, git_cmd);
-               page[page_len] = 0;
+               char *p = malloc(page_len + 1);
+               strcpy(p, "git-");
+               strcpy(p + 4, git_cmd);
+               p[page_len] = 0;
+               page = p;
        }
 
        execlp("man", "man", page, NULL);
 }
 
-static int cmd_version(int argc, char **argv, char **envp)
+static int cmd_version(int argc, const char **argv, char **envp)
 {
        printf("git version %s\n", GIT_VERSION);
        return 0;
 }
 
-static int cmd_help(int argc, char **argv, char **envp)
+static int cmd_help(int argc, const char **argv, char **envp)
 {
-       char *help_cmd = argv[1];
+       const char *help_cmd = argv[1];
        if (!help_cmd)
-               cmd_usage(git_exec_path(), NULL);
-       show_man_page(help_cmd);
+               cmd_usage(0, git_exec_path(), NULL);
+       else if (!strcmp(help_cmd, "--all") || !strcmp(help_cmd, "-a"))
+               cmd_usage(1, git_exec_path(), NULL);
+       else
+               show_man_page(help_cmd);
        return 0;
 }
 
 #define LOGSIZE (65536)
 
-static int cmd_log(int argc, char **argv, char **envp)
+static int cmd_log(int argc, const char **argv, char **envp)
 {
        struct rev_info rev;
        struct commit *commit;
@@ -263,7 +288,7 @@ static int cmd_log(int argc, char **argv, char **envp)
 
        argc = setup_revisions(argc, argv, &rev, "HEAD");
        while (1 < argc) {
-               char *arg = argv[1];
+               const char *arg = argv[1];
                if (!strncmp(arg, "--pretty", 8)) {
                        commit_format = get_commit_format(arg + 8);
                        if (commit_format == CMIT_FMT_ONELINE)
@@ -323,14 +348,12 @@ static int cmd_log(int argc, char **argv, char **envp)
        return 0;
 }
 
-#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
-
-static void handle_internal_command(int argc, char **argv, char **envp)
+static void handle_internal_command(int argc, const char **argv, char **envp)
 {
        const char *cmd = argv[0];
        static struct cmd_struct {
                const char *cmd;
-               int (*fn)(int, char **, char **);
+               int (*fn)(int, const char **, char **);
        } commands[] = {
                { "version", cmd_version },
                { "help", cmd_help },
@@ -346,9 +369,9 @@ static void handle_internal_command(int argc, char **argv, char **envp)
        }
 }
 
-int main(int argc, char **argv, char **envp)
+int main(int argc, const char **argv, char **envp)
 {
-       char *cmd = argv[0];
+       const char *cmd = argv[0];
        char *slash = strrchr(cmd, '/');
        char git_command[PATH_MAX + 1];
        const char *exec_path = NULL;
@@ -420,7 +443,7 @@ int main(int argc, char **argv, char **envp)
                        puts(git_exec_path());
                        exit(0);
                }
-               cmd_usage(NULL, NULL);
+               cmd_usage(0, NULL, NULL);
        }
        argv[0] = cmd;
 
@@ -443,7 +466,7 @@ int main(int argc, char **argv, char **envp)
        execv_git_cmd(argv);
 
        if (errno == ENOENT)
-               cmd_usage(exec_path, "'%s' is not a git-command", cmd);
+               cmd_usage(0, exec_path, "'%s' is not a git-command", cmd);
 
        fprintf(stderr, "Failed to run command '%s': %s\n",
                git_command, strerror(errno));