The previous commit added code generation for all_cmd_desc[] which
includes almost everything we need to generate common command list.
Convert help code to use that array instead and drop common_cmds[] array.
The description of each common command group is removed from
command-list.txt. This keeps this file format simpler. common-cmds.h
will not be generated correctly after this change due to the
command-list.txt format change. But it does not matter and
common-cmds.h will be removed.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclo...@gmail.com>
---
Makefile | 4 +-
command-list.txt | 10 ---
generate-cmdlist.sh | 4 +-
help.c | 145 +++++++++++++++++++++++++++++++++-----------
t/t0012-help.sh | 9 +++
5 files changed, 122 insertions(+), 50 deletions(-)
diff --git a/Makefile b/Makefile
index 2a8913ea21..5c58b0b692 100644
--- a/Makefile
+++ b/Makefile
@@ -1914,9 +1914,9 @@ git$X: git.o GIT-LDFLAGS $(BUILTIN_OBJS) $(GITLIBS)
$(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) \
$(filter %.o,$^) $(LIBS)
-help.sp help.s help.o: common-cmds.h
+help.sp help.s help.o: common-cmds.h command-list.h
-builtin/help.sp builtin/help.s builtin/help.o: common-cmds.h GIT-PREFIX
+builtin/help.sp builtin/help.s builtin/help.o: common-cmds.h command-list.h
GIT-PREFIX
builtin/help.sp builtin/help.s builtin/help.o: EXTRA_CPPFLAGS = \
'-DGIT_HTML_PATH="$(htmldir_relative_SQ)"' \
'-DGIT_MAN_PATH="$(mandir_relative_SQ)"' \
diff --git a/command-list.txt b/command-list.txt
index 786536aba0..3bd23201a6 100644
--- a/command-list.txt
+++ b/command-list.txt
@@ -1,13 +1,3 @@
-# common commands are grouped by themes
-# these groups are output by 'git help' in the order declared here.
-# map each common command in the command list to one of these groups.
-### common groups (do not change this line)
-init start a working area (see also: git help tutorial)
-worktree work on the current change (see also: git help everyday)
-info examine the history and state (see also: git help revisions)
-history grow, mark and tweak your common history
-remote collaborate (see also: git help workflows)
-
### command list (do not change this line, also do not change alignment)
# command name category [category] [category]
git-add mainporcelain worktree
diff --git a/generate-cmdlist.sh b/generate-cmdlist.sh
index 870d3b626a..9eb22c4ef1 100755
--- a/generate-cmdlist.sh
+++ b/generate-cmdlist.sh
@@ -6,7 +6,7 @@ die () {
}
command_list () {
- sed '1,/^### command list/d;/^#/d' "$1"
+ grep -v '^#' "$1"
}
get_categories () {
@@ -65,7 +65,7 @@ echo "/* Automatically generated by generate-cmdlist.sh */
struct cmdname_help {
const char *name;
const char *help;
- uint32_t group;
+ uint32_t category;
};
"
if test -z "$2"
diff --git a/help.c b/help.c
index 60071a9bea..2d6a3157f8 100644
--- a/help.c
+++ b/help.c
@@ -5,13 +5,114 @@
#include "run-command.h"
#include "levenshtein.h"
#include "help.h"
-#include "common-cmds.h"
+#include "command-list.h"
#include "string-list.h"
#include "column.h"
#include "version.h"
#include "refs.h"
#include "parse-options.h"
+struct category_description {
+ uint32_t category;
+ const char *desc;
+};
+static uint32_t common_mask =
+ CAT_init | CAT_worktree | CAT_info |
+ CAT_history | CAT_remote;
+static struct category_description common_categories[] = {
+ { CAT_init, N_("start a working area (see also: git help tutorial)") },
+ { CAT_worktree, N_("work on the current change (see also: git help
everyday)") },
+ { CAT_info, N_("examine the history and state (see also: git help
revisions)") },
+ { CAT_history, N_("grow, mark and tweak your common history") },
+ { CAT_remote, N_("collaborate (see also: git help workflows)") },
+ { 0, NULL }
+};
+
+static const char *drop_prefix(const char *name)
+{
+ const char *new_name;
+
+ if (skip_prefix(name, "git-", &new_name))
+ return new_name;
+ return name;
+
+}
+
+static void extract_cmds(struct cmdname_help **p_cmds, uint32_t mask)
+{
+ int i, nr = 0;
+ struct cmdname_help *cmds;
+
+ if (ARRAY_SIZE(command_list) == 0)
+ BUG("empty command_list[] is a sign of broken
generate-cmdlist.sh");
+
+ ALLOC_ARRAY(cmds, ARRAY_SIZE(command_list) + 1);
+
+ for (i = 0; i < ARRAY_SIZE(command_list); i++) {
+ const struct cmdname_help *cmd = command_list + i;
+
+ if (!(cmd->category & mask))
+ continue;
+
+ cmds[nr] = *cmd;
+ cmds[nr].name = drop_prefix(cmd->name);
+
+ nr++;
+ }
+ cmds[nr].name = NULL;
+ *p_cmds = cmds;
+}
+
+static void print_command_list(const struct cmdname_help *cmds,
+ uint32_t mask, int longest)
+{
+ int i;
+
+ for (i = 0; cmds[i].name; i++) {
+ if (cmds[i].category & mask) {
+ printf(" %s ", cmds[i].name);
+ mput_char(' ', longest - strlen(cmds[i].name));
+ puts(_(cmds[i].help));
+ }
+ }
+}
+
+static int cmd_name_cmp(const void *elem1, const void *elem2)
+{
+ const struct cmdname_help *e1 = elem1;
+ const struct cmdname_help *e2 = elem2;
+
+ return strcmp(e1->name, e2->name);
+}
+
+static void print_cmd_by_category(const struct category_description *catdesc)
+{
+ struct cmdname_help *cmds;
+ int longest = 0;
+ int i, nr = 0;
+ uint32_t mask = 0;
+
+ for (i = 0; catdesc[i].desc; i++)
+ mask |= catdesc[i].category;
+
+ extract_cmds(&cmds, mask);
+
+ for (i = 0; cmds[i].name; i++, nr++) {
+ if (longest < strlen(cmds[i].name))
+ longest = strlen(cmds[i].name);
+ }
+ QSORT(cmds, nr, cmd_name_cmp);
+
+ for (i = 0; catdesc[i].desc; i++) {
+ uint32_t mask = catdesc[i].category;
+ const char *desc = catdesc[i].desc;
+
+ printf("\n%s\n", _(desc));
+ print_command_list(cmds, mask, longest);
+ }
+ free(cmds);
+}
+
void add_cmdname(struct cmdnames *cmds, const char *name, int len)
{
struct cmdname *ent;
@@ -190,42 +291,10 @@ void list_commands(unsigned int colopts,
}
}
-static int cmd_group_cmp(const void *elem1, const void *elem2)
-{
- const struct cmdname_help *e1 = elem1;
- const struct cmdname_help *e2 = elem2;
-
- if (e1->group < e2->group)
- return -1;
- if (e1->group > e2->group)
- return 1;
- return strcmp(e1->name, e2->name);
-}
-
void list_common_cmds_help(void)
{
- int i, longest = 0;
- int current_grp = -1;
-
- for (i = 0; i < ARRAY_SIZE(common_cmds); i++) {
- if (longest < strlen(common_cmds[i].name))
- longest = strlen(common_cmds[i].name);
- }
-
- QSORT(common_cmds, ARRAY_SIZE(common_cmds), cmd_group_cmp);
-
puts(_("These are common Git commands used in various situations:"));
-
- for (i = 0; i < ARRAY_SIZE(common_cmds); i++) {
- if (common_cmds[i].group != current_grp) {
- printf("\n%s\n",
_(common_cmd_groups[common_cmds[i].group]));
- current_grp = common_cmds[i].group;
- }
-
- printf(" %s ", common_cmds[i].name);
- mput_char(' ', longest - strlen(common_cmds[i].name));
- puts(_(common_cmds[i].help));
- }
+ print_cmd_by_category(common_categories);
}
int is_in_cmdlist(struct cmdnames *c, const char *s)
@@ -285,6 +354,7 @@ const char *help_unknown_cmd(const char *cmd)
{
int i, n, best_similarity = 0;
struct cmdnames main_cmds, other_cmds;
+ struct cmdname_help *common_cmds;
memset(&main_cmds, 0, sizeof(main_cmds));
memset(&other_cmds, 0, sizeof(other_cmds));
@@ -299,6 +369,8 @@ const char *help_unknown_cmd(const char *cmd)
QSORT(main_cmds.names, main_cmds.cnt, cmdname_compare);
uniq(&main_cmds);
+ extract_cmds(&common_cmds, common_mask);
+
/* This abuses cmdname->len for levenshtein distance */
for (i = 0, n = 0; i < main_cmds.cnt; i++) {
int cmp = 0; /* avoid compiler stupidity */
@@ -313,10 +385,10 @@ const char *help_unknown_cmd(const char *cmd)
die(_(bad_interpreter_advice), cmd, cmd);
/* Does the candidate appear in common_cmds list? */
- while (n < ARRAY_SIZE(common_cmds) &&
+ while (common_cmds[n].name &&
(cmp = strcmp(common_cmds[n].name, candidate)) < 0)
n++;
- if ((n < ARRAY_SIZE(common_cmds)) && !cmp) {
+ if (common_cmds[n].name && !cmp) {
/* Yes, this is one of the common commands */
n++; /* use the entry from common_cmds[] */
if (starts_with(candidate, cmd)) {
@@ -329,6 +401,7 @@ const char *help_unknown_cmd(const char *cmd)
main_cmds.names[i]->len =
levenshtein(cmd, candidate, 0, 2, 1, 3) + 1;
}
+ FREE_AND_NULL(common_cmds);
QSORT(main_cmds.names, main_cmds.cnt, levenshtein_compare);
diff --git a/t/t0012-help.sh b/t/t0012-help.sh
index 487b92a5de..c096f33505 100755
--- a/t/t0012-help.sh
+++ b/t/t0012-help.sh
@@ -49,6 +49,15 @@ test_expect_success "--help does not work for guides" "
test_i18ncmp expect actual
"
+test_expect_success 'git help' '
+ git help >help.output &&
+ test_i18ngrep "^ clone " help.output &&
+ test_i18ngrep "^ add " help.output &&
+ test_i18ngrep "^ log " help.output &&
+ test_i18ngrep "^ commit " help.output &&
+ test_i18ngrep "^ fetch " help.output
+'
+
test_expect_success 'generate builtin list' '
git --list-builtins >builtins
'
--
2.17.0.705.g3525833791
