Add command line options

[code/vcsh.git] / vcsh

diff --git a/vcsh b/vcsh
index ba0049e542120cf4931ce3652b9b412808bef2b4..9a4f4aae437597fad43cb959a9a0707faea7b99b 100755 (executable)
--- a/vcsh
+++ b/vcsh
@@ -5,6 +5,40 @@
 # For details, see LICENSE. To submit patches, you have to agree to
 # license your code under the GNU GPL version 2 or later.
 
+# While the following is not legally binding, the author would like to
+# explain the choice of GPLv2+ over GPLv3+.
+# The author prefers GPLv3+ over GPLv2+ but feels it's better to maintain
+# full compability with git. In case git ever changes its licensing terms,
+# this software will most likely follow suit.
+
+SELF=$(basename $0)
+
+fatal() {
+       echo "$SELF: fatal: $1" >&2
+       exit $2
+}
+
+# We need to run getops as soon as possible so we catch -d and other
+# options that will modify our behaviour.
+# Commands are handled at the end of this script.
+while getopts  "c:dv" flag; do
+       if [ "$1" = '-d' ] || [ "$1" = '--debug' ]; then
+               set -vx
+               VCSH_DEBUG=1
+               shift 1
+       elif [ "$1" = '-v' ];then
+               VCSH_VERBOSE=1
+       elif [ "$1" = '-c' ];then
+               # Source $OPTARG if it can be read and has an absolute or relative
+               # path or is in $PATH
+               if [ -r "$OPTARG" ]; then
+                       . "$OPTARG"
+               else
+                       fatal "Can not read configuration file '$OPTARG'" 1
+               fi
+       fi
+done
+
 
 [ -n "$VCSH_DEBUG" ]                  && set -vx
 [ -z "$XDG_CONFIG_HOME" ]             && XDG_CONFIG_HOME="$HOME/.config"
@@ -15,16 +49,20 @@
 [ -z "$VCSH_BASE" ]                   && VCSH_BASE="$HOME"
 [ -z "$VCSH_GITIGNORE" ]              && VCSH_GITIGNORE='exact'
 
-SELF=$(basename $0)
-
 help() {
-       echo "usage: $SELF <args>
+       echo "usage: $SELF <options> <command>
 
+   options:
+   -c <file>            Source file prior to other configuration files
+   -d                   Enable debug mode
+   -d                   Enable verbose mode
+
+   commands:
    clone <remote> \\
          [<repo>]       Clone from an existing repository
-   help                 Display this help text
    delete               Delete an existing repository
    enter                Enter repository; spawn new instance of \$SHELL
+   help                 Display this help text
    init <repo>          Initialize a new repository
    list                 List all repositories
    list-tracked         List all files tracked by vcsh
@@ -51,11 +89,6 @@ verbose() {
        if [ -n "$VCSH_DEBUG" ] || [ -n "$VCSH_VERBOSE" ]; then echo "$SELF: verbose: $@"; fi
 }
 
-fatal() {
-       echo "$SELF: fatal: $1" >&2
-       exit $2
-}
-
 error() {
        echo "$SELF: error: $1" >&2
 }
@@ -133,8 +166,8 @@ init() {
 }
 
 list() {
-       for i in "$VCSH_REPO_D"/*.git; do
-               echo $(basename "$i" .git)
+       for repo in "$VCSH_REPO_D"/*.git; do
+               [ -d "$repo" ] && [ -r "$repo" ] && echo $(basename "$repo" .git)
        done
 }