Support switching between different provider configs

2 files changed, 13 insertions, 4 deletions

diff --git a/README.md b/README.md
index 5e0de3e..6442d41 100644
--- a/README.md
+++ b/README.md
@@ -54,4 +54,7 @@ The `list_cmd` generated the list of entries. For each entry, it has to print th
 
 The `preview_cmd` renders the contents of the `fzf` preview panel. You can use the template variable `{1}` in your command, which will be substituted with the value of the selected item.
 
-The `launch_cmd` is fired when the user has selected one of the provider's entries.
\ No newline at end of file
+The `launch_cmd` is fired when the user has selected one of the provider's entries.
+
+Note: Pass the environment variable `PROVIDERS_FILE` to read custom providers from another file than the default `providers.conf`.
+The path in `PROVIDERS_FILE` can either be absolute or relative to `${HOME}/.config/sway-launcher-desktop/`.
diff --git a/sway-launcher-desktop.sh b/sway-launcher-desktop.sh
index 59cce1b..becf7ba 100755
--- a/sway-launcher-desktop.sh
+++ b/sway-launcher-desktop.sh
@@ -15,13 +15,17 @@ DEL=$'\34'
 TERMINAL_COMMAND="${TERMINAL_COMMAND:="urxvt -e"}"
 GLYPH_COMMAND="  "
 GLYPH_DESKTOP="  "
-HIST_FILE="${XDG_CACHE_HOME:-$HOME/.cache}/${0##*/}-history.txt"
 CONFIG_DIR="${XDG_CONFIG_HOME:-$HOME/.config}/sway-launcher-desktop"
+PROVIDERS_FILE="${PROVIDERS_FILE:=providers.conf}"
+if [[ "${PROVIDERS_FILE#/}" == "${PROVIDERS_FILE}" ]]; then
+    # $PROVIDERS_FILE is a relative path, prepend $CONFIG_DIR
+    PROVIDERS_FILE="${CONFIG_DIR}/${PROVIDERS_FILE}"
+fi
 
 # Provider config entries are separated by the field separator \034 and have the following structure:
 # list_cmd,preview_cmd,launch_cmd
 declare -A PROVIDERS
-if [ -f "${CONFIG_DIR}/providers.conf" ]; then
+if [ -f "${PROVIDERS_FILE}" ]; then
   eval "$(awk -F= '
   BEGINFILE{ provider=""; }
   /^\[.*\]/{sub("^\\[", "");sub("\\]$", "");provider=$0}
@@ -36,10 +40,12 @@ if [ -f "${CONFIG_DIR}/providers.conf" ]; then
       }
       print "PROVIDERS[\x27" key "\x27]=\x27" providers[key]["list_cmd"] "\034" providers[key]["preview_cmd"] "\034" providers[key]["launch_cmd"] "\x27\n"
     }
-  }' "${CONFIG_DIR}/providers.conf")"
+  }' "${PROVIDERS_FILE}")"
+  HIST_FILE="${XDG_CACHE_HOME:-$HOME/.cache}/${0##*/}-${PROVIDERS_FILE##*/}-history.txt"
 else
   PROVIDERS['desktop']="${0} list-entries${DEL}${0} describe-desktop '{1}'${DEL}${0} run-desktop '{1}' {2}"
   PROVIDERS['command']="${0} list-commands${DEL}${0} describe-command {1}${DEL}${TERMINAL_COMMAND} {1}"
+  HIST_FILE="${XDG_CACHE_HOME:-$HOME/.cache}/${0##*/}-history.txt"
 fi
 
 touch "$HIST_FILE"