[PATCH v8 3/5] generate-cmdlist: parse common group commands

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From: Eric Sunshine <sunshine@xxxxxxxxxxxxxx>

Parse the group block to create the array of group descriptions:

static char *common_cmd_groups[] = {
    N_("starting a working area"),
    N_("working on the current change"),
    N_("working with others"),
    N_("examining the history and state"),
    N_("growing, marking and tweaking your history"),
};

then map each element of common_cmds[] to a group via its index:

static struct cmdname_help common_cmds[] = {
    {"add", N_("Add file contents to the index"), 1},
    {"branch", N_("List, create, or delete branches"), 4},
    {"checkout", N_("Checkout a branch or paths to the ..."), 4},
    {"clone", N_("Clone a repository into a new directory"), 0},
    {"commit", N_("Record changes to the repository"), 4},
    ...
};

so that 'git help' can print those commands grouped by theme.

Only commands tagged with an attribute from the group block are emitted to
common_cmds[].

[commit message by Sébastien Guimmara <sebastien.guimmara@xxxxxxxxx>]

Signed-off-by: Eric Sunshine <sunshine@xxxxxxxxxxxxxx>
Signed-off-by: Sébastien Guimmara <sebastien.guimmara@xxxxxxxxx>
---
 Makefile             |  4 ++--
 generate-cmdlist.awk | 39 +++++++++++++++++++++++++++++++++++++++
 generate-cmdlist.sh  | 23 -----------------------
 3 files changed, 41 insertions(+), 25 deletions(-)
 create mode 100644 generate-cmdlist.awk
 delete mode 100755 generate-cmdlist.sh

diff --git a/Makefile b/Makefile
index 5ed0acf..9da8687 100644
--- a/Makefile
+++ b/Makefile
@@ -1693,10 +1693,10 @@ $(BUILT_INS): git$X
 	ln -s $< $@ 2>/dev/null || \
 	cp $< $@
 
-common-cmds.h: ./generate-cmdlist.sh command-list.txt
+common-cmds.h: generate-cmdlist.awk command-list.txt
 
 common-cmds.h: $(wildcard Documentation/git-*.txt)
-	$(QUIET_GEN)./generate-cmdlist.sh > $@+ && mv $@+ $@
+	$(QUIET_GEN)awk -f generate-cmdlist.awk command-list.txt > $@+ && mv $@+ $@
 
 SCRIPT_DEFINES = $(SHELL_PATH_SQ):$(DIFF_SQ):$(GIT_VERSION):\
 	$(localedir_SQ):$(NO_CURL):$(USE_GETTEXT_SCHEME):$(SANE_TOOL_PATH_SQ):\
diff --git a/generate-cmdlist.awk b/generate-cmdlist.awk
new file mode 100644
index 0000000..dbf1e6b
--- /dev/null
+++ b/generate-cmdlist.awk
@@ -0,0 +1,39 @@
+BEGIN {
+	print "/* Automatically generated by generate-cmdlist.awk */\n"
+	print "struct cmdname_help {"
+	print "\tchar name[16];"
+	print "\tchar help[80];"
+	print "\tunsigned char group;"
+	print "};\n"
+	print "static char *common_cmd_groups[] = {"
+}
+/### common groups/ {
+	state = 1
+}
+/### command list/ {
+	print "};\n\nstatic struct cmdname_help common_cmds[] = {"
+	state = 2
+}
+/^#/ || /^[ 	]*$/ { next }
+state == 2 {
+	for (i = 2; i <= NF; i++)
+		if (grp[$i]) {
+			f = "Documentation/"$1".txt"
+			while (getline s <f > 0)
+				if (match(s, $1" - ")) {
+					t = substr(s, length($1" - ") + 1)
+					break
+				}
+			close(f)
+			printf "\t{\"%s\", N_(\"%s\"), %s},\n",
+				substr($1, length("git-") + 1), t, grp[$i] - 1
+			break
+		}
+}
+state == 1 {
+	grp[$1] = ++n
+	sub($1"[ 	][ 	]*", "")
+	printf "\tN_(\"%s\"),\n", $0
+}
+
+END { print "};" }
diff --git a/generate-cmdlist.sh b/generate-cmdlist.sh
deleted file mode 100755
index 9a4c9b9..0000000
--- a/generate-cmdlist.sh
+++ /dev/null
@@ -1,23 +0,0 @@
-#!/bin/sh
-
-echo "/* Automatically generated by $0 */
-struct cmdname_help {
-    char name[16];
-    char help[80];
-};
-
-static struct cmdname_help common_cmds[] = {"
-
-sed -n -e 's/^git-\([^ 	]*\)[ 	].* common.*/\1/p' command-list.txt |
-sort |
-while read cmd
-do
-     sed -n '
-     /^NAME/,/git-'"$cmd"'/H
-     ${
-	    x
-	    s/.*git-'"$cmd"' - \(.*\)/  {"'"$cmd"'", N_("\1")},/
-	    p
-     }' "Documentation/git-$cmd.txt"
-done
-echo "};"
-- 
2.4.0.GIT

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