add logging function

1 files changed, 24 insertions, 15 deletions

@@ -51,24 +51,23 @@ configure() {
         FEED_TEMPLATE="${VIENNA_FEED_TEMPLATE:-.feed.tmpl.xml}"
         # File extensions
         PAGE_RAW_EXT="${VIENNA_PAGE_RAW_EXT:-htm}"
-        ## Source ./.vienna.sh, if it exists.
-        # Sourcing it here lets it override any environment variables, and it to
-        # be overridden by command-line flags.
-        test -f "$CONFIG" && . "$CONFIG"
+        # Logging
+        LOG=true
         ## Parse command line arguments
-        while getopts d:C:o:h opt; do
+        while getopts d:C:o:hq opt; do
                 case "$opt" in
                 d) DOMAIN="$OPTARG" ;;
                 C) WORKD="$OPTARG" ;;
                 o) OUTD="$OPTARG" ;;
                 h) usage 0 ;;
+                q) LOG=false ;;
                 *) exit 1 ;;
                 esac
         done
         ## Log configuration variables
-        echo >&2 "[config] domain: $DOMAIN"
-        echo >&2 "[config] workdir: $WORKD"
-        echo >&2 "[config] output: $OUTD"
+        log config "domain: $DOMAIN"
+        log config "workdir: $WORKD"
+        log config "output: $OUTD"
         ## Initialize state
         FILE=
         ## Cleanup after we're done
@@ -87,7 +86,7 @@ main() {
         case "${1:-ok}" in
         ok) ;;
         clean)
-                echo >&2 "[vienna] clean"
+                log vienna "clean"
                 rm -r "$OUTD"
                 exit
                 ;;
@@ -114,15 +113,15 @@ main() {
         case "${1:-ok}" in
         ok) ;;
         publish)
-                echo >&2 "[vienna] publish"
+                log vienna "publish"
                 publish "$OUTD"
                 ;;
         preview)
-                echo >&2 "[vienna] preview"
+                log vienna "preview"
                 preview "$OUTD"
                 ;;
         *)
-                echo >&2 "[vienna] Don't know command \`$1'."
+                log vienna "Don't know command \`$1'."
                 exit 1
                 ;;
         esac
@@ -159,6 +158,16 @@ EOF
         exit 3
 }
 
+### Utility
+
+log() {
+        if "$LOG"; then
+                t="$1"
+                shift
+                echo >&2 "[$t]" "$@"
+        fi
+}
+
 ### File processing
 
 ## Building block functions
@@ -230,7 +239,7 @@ build() { # build PAGE...
         # Outputs a file of the format $OUTD/<PAGE>/index.html.
         test -f "$PAGE_TEMPLATE" || return 1
         for FILE; do
-                echo >&2 "[build] $FILE"
+                log build "$FILE"
                 outd="$OUTD/${FILE%.$PAGE_RAW_EXT}"
                 outf="$outd/index.html"
                 tmpf="$TMPD/$FILE.tmp"
@@ -245,7 +254,7 @@ index() { # index PAGE...
         # Wraps each PAGE in a <li><a> structure.
         test -f "$INDEX_TEMPLATE" || return 1
         for FILE; do
-                echo >&2 "[index] $FILE"
+                log index "$FILE"
                 link="$DOMAIN${DOMAIN:+/}${FILE%.$PAGE_RAW_EXT}"
                 echo "<li><a href=\"$link\">$(meta title "$FILE")</a></li>"
         done | expand "$INDEX_TEMPLATE" >"$OUTD/index.html"
@@ -255,7 +264,7 @@ feed() { # feed PAGE...
         ## Build an RSS 2.0 feed from PAGE(s).
         test -f "$FEED_TEMPLATE" || return 1
         for FILE; do
-                echo >&2 "[feed] $FILE"
+                log feed "$FILE"
                 link="$DOMAIN${DOMAIN:+/}${FILE%.$PAGE_RAW_EXT}"
                 date="$(meta pubdate "$FILE")"
                 echo "<item>"