From 04b385284a8559bde3df51bab950784a0fd28cfd Mon Sep 17 00:00:00 2001
From: Douglas Rumbaugh <doug@douglasrumbaugh.com>
Date: Mon, 12 Sep 2022 22:40:03 -0400
Subject: Updates/adjustments

---
 ves-var-add.sh | 138 +++++++++++++++++++++++++++------------------------------
 1 file changed, 66 insertions(+), 72 deletions(-)

(limited to 'ves-var-add.sh')

diff --git a/ves-var-add.sh b/ves-var-add.sh
index 7f0ee5a..d36647c 100755
--- a/ves-var-add.sh
+++ b/ves-var-add.sh
@@ -1,84 +1,78 @@
 #!/bin/sh
-
-if [ -z ${XDG_DATA_HOME+x} ]; then
-    ENV_DIR="$HOME/.local/share/ves/envs"
-else
-    ENV_DIR="$XDG_DATA_HOME/ves/envs"
-fi
-
-check_name() {
-    if ! [ -f "$ENV_DIR/$1" ]; then
-        printf "ERROR: Environment [%s] does not exist.\n" $1 > /dev/stderr
-        exit 1
+ves_var_add() {
+    if [ "$#" -lt 2 ]; then
+        printf "ERROR: Insufficient arguments provided.\n"
+        return 2
     fi
 
-    if ! echo $1 | grep "^[[:alpha:][:digit:]_-]*$" > /dev/null; then
-        printf "ERROR: Environment [%s] is invalid. Name must contain only letters, -, and _\n" $1 > /dev/stderr
-        exit 1
-    fi
-}
+    env=""
 
-ENV=""
+    while :; do
+        case $1 in
+            --env=*)
+                env=$( echo $1 | cut -d "=" -f 2 )
+                shift
+                break
+                ;;
+            --)
+                shift
+                break
+                ;;
 
-while :; do
-    case $1 in
-        --env=*)
-            ENV=$( echo $1 | cut -d "=" -f 2 )
-            shift
-            break
-            ;;
-        --)
-            shift
-            break
-            ;;
+            -?*)
+                printf "ERROR: Invalid option [%s]\n" $1 > /dev/stderr
+                return 2
+                ;;
 
-        -?*)
-            printf "ERROR: Invalid option [%s]\n" $1 > /dev/stderr
-            exit 2
-            ;;
+            *)
+                break
+        esac
+        shift
+    done
 
-        *)
-            break
-    esac
-    shift
-done
+    active_env=0
+    if [ -z "$env" ]; then
+        if ! [ -z "$SHVES_ENV_NM"]; then
+            env="$SHVES_ENV_NM"
+            active_env=1
+        else
+            printf "ERROR: No valid environment active or specified\n" > /dev/stderr
+            return 1
+        fi
+    fi
 
-if ! [ -z $ENV ]; then
-    check_name $ENV
-elif ! [ -z $VES_ENV_NM ]; then
-    # this check_name shouldn't be necessary, but I suppose someone
-    # could always manually reassign the variable, so we'd better
-    # check it.
-    check_name $VES_ENV_NM
-    ENV=$VES_ENV_NM
-else
-    printf "ERROR: No valid environment active or specified\n" > /dev/stderr
-    exit 2
-fi
+    if ! _shves_check_env_name "$env"; then
+        return 1
+    fi
 
-if [ $# -lt 2 ]; then
-    printf "ERROR: Insufficient arguments provided.\n"
-    exit 2
-fi
+    if ! _shves_check_env_exists "$env"; then
+        return 1;
+    fi
 
-# Ah, bash would have made this so much nicer... alas
-# if [ -z ${!1+x} ]; then ...
-if eval [ -z \${$1+x} ]; then
-    printf "ERROR: Specified variable [%s] does not exist in environment.\n" $1 > /dev/stderr
-    printf "\tYou can create it with\n\t ves export %s\n " $1 > /dev/stderr
-    exit 2
-fi
+    # First, we will get the variable value from the environment file and 
+    # create our new version of it.
+    fname="$SHVES_ENV_DIR"/"$env"
+    var_value=$(grep "export_var:$var=" $SHVES_ENV_DIR/test2 | cut -d '=' -f 2)
+    if [ -z "$var_value" ]; then
+        var_value="$2"
+    else
+        var_value="$var_value:$2"
+    fi
 
-# If we get down here, all is good. We can go ahead and prepend
-# :$2 to the variable contained in $1. Again, no easy indirection,
-# so we must use eval.
-if eval [ -z \${$1} ]; then
-  export $1=$2
-else
-    eval export "$1"="$2":\$"$1"
-fi
+    # And then update the file to use the new version.
+    sed -i "s/export_var:$var=.*"/export_var:$var=$var_value"/" "$fname"
 
-# Perhaps we could use . to run this script from the main caller
-# which could be set up as a shell function?
-# That approach seems to work to modify the parent shell. Just
-# gotta set up the main guy as a function.
+    # If we are updating the currently active environment, export the
+    # new value as well,
+    if [ $active_env -eq 1 ]; then
+        export "$var"="$var_value"
+    fi
+
+    # Ah, bash would have made this so much nicer... alas
+    # if [ -z ${!1+x} ]; then ...
+#    if [ "$active_env" -eq 1 ] && eval [ -z \${$1+x} ]; then
+#        printf "ERROR: Specified variable [%s] does not exist in environment.\n" $1 > /dev/stderr
+#        printf "\tYou can create it with\n\t ves export %s\n " $1 > /dev/stderr
+#        return 2
+#    fi
+}
-- 
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