[PATCH 2/3] generate-cmdlist.sh: parse common group commands

["Sébastien Guimmara" <sebastien.guimmara@gmail.com>]

parse the [groups] 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 working tree"), 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 command grouped by theme.

Helped-by: Junio C Hamano <gitster@pobox.com>
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Sébastien Guimmara <sebastien.guimmara@gmail.com>
---
 generate-cmdlist.sh | 43 +++++++++++++++++++++++++++++++------------
 1 file changed, 31 insertions(+), 12 deletions(-)

diff --git a/generate-cmdlist.sh b/generate-cmdlist.sh
index 9a4c9b9..724bb8d 100755
--- a/generate-cmdlist.sh
+++ b/generate-cmdlist.sh
@@ -1,23 +1,42 @@
 #!/bin/sh
+content=$(cat command-list.txt)
+
+group_line_no=$(expr $(echo "$content" | grep -n '^\[groups\]' | cut -f1 -d:) + 1)
+command_line_no=$(expr $(echo "$content" | grep -n '^\[commands\]' | cut -f1 -d:) + 1)
+groups=$(echo "$content" | sed -n ''$group_line_no', '$(expr $command_line_no)'p')
 
 echo "/* Automatically generated by $0 */
+
 struct cmdname_help {
     char name[16];
     char help[80];
+    unsigned char group;
 };
 
+static char *common_cmd_groups[] = {"
+echo "$groups" |
+while read group description; do
+    if [ -z $group ]; then
+        break
+    fi
+    echo '   N_("'$description'"),'
+done
+echo "};
+
 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"
+echo "$content" | grep 'common-' |
+awk '{ print $1, "\t", $3 }' |
+while read cmd grp; do
+    cmd_name=$(echo $cmd | cut -d - -f 2)
+    group_name=$(echo $grp | cut -d - -f 2)
+    group_idx=$(expr $(echo "$groups" | grep -n "^$group_name" | cut -c 1) - 1)
+    sed -n '
+    /^NAME/,/git-'"$cmd_name"'/H
+    ${
+       x
+       s/.*git-'"$cmd_name"' - \(.*\)/  {"'"$cmd_name"'", N_("\1"), '"$group_idx"'},/
+       p
+    }' "Documentation/$cmd.txt"
 done
-echo "};"
+echo "};"
\ No newline at end of file
-- 
2.4.0