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authorLuke Shumaker <LukeShu@sbcglobal.net>2013-09-11 10:18:04 -0400
committerLuke Shumaker <LukeShu@sbcglobal.net>2013-09-11 15:43:36 -0400
commit4b9f4323abfaa0f4030cc29aed97e0716f9c5852 (patch)
tree1dca8650a1a5857f180aaa7704b7b7ee3ba77d32 /src/lib
parent5bbf15572626010ce6e2bc783d0a980fc24662b2 (diff)
libremessages: add a few more message routines, and make them gettext-aware.
- Don't set LANG=C in common.sh - Move TEXTDOMAIN stuff into common.sh; so devtools stuff will use it. - Add _(): Basically an alias for `gettext`, but falls back if gettext is not available. - Add panic(): First showed up in `distcc-tool`, does what it sounds like. - Add prose(), bullet(), and flag(): they do word wrapping and such to make it easy to internationalize `--help` text. - Teach common.mk how to make .pot files based on these routines.
Diffstat (limited to 'src/lib')
-rw-r--r--src/lib/Makefile11
-rw-r--r--src/lib/common.sh.bottom1
-rw-r--r--src/lib/common.sh.top12
-rwxr-xr-xsrc/lib/libremessages78
4 files changed, 87 insertions, 15 deletions
diff --git a/src/lib/Makefile b/src/lib/Makefile
index d7b4049..255bc05 100644
--- a/src/lib/Makefile
+++ b/src/lib/Makefile
@@ -10,8 +10,9 @@ include ../../common.mk
common.sh: %: %.in %.top Makefile
@echo "GEN $@"
@{ \
- cat "$*.top" && \
- echo 'if [[ -z $${_INCLUDE_COMMON_SH:-} ]]; then' && \
- echo '_INCLUDE_COMMON_SH=true' && \
- cat "$*.in" && \
- echo 'fi'; } > "$@"
+ cat '$*.top' && \
+ echo && \
+ sed -r -e '/encoding problem/d;/LANG=/d' -e 's/mesg=\$$(.)/mesg="$$(_ "$$\1")"/' '$*.in' && \
+ echo && \
+ cat '$*.bottom' && \
+ :; } > '$@'
diff --git a/src/lib/common.sh.bottom b/src/lib/common.sh.bottom
new file mode 100644
index 0000000..e133fad
--- /dev/null
+++ b/src/lib/common.sh.bottom
@@ -0,0 +1 @@
+fi
diff --git a/src/lib/common.sh.top b/src/lib/common.sh.top
index d59268d..c335956 100644
--- a/src/lib/common.sh.top
+++ b/src/lib/common.sh.top
@@ -11,3 +11,15 @@
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
+
+if [[ -z ${_INCLUDE_COMMON_SH:-} ]]; then
+_INCLUDE_COMMON_SH=true
+
+export TEXTDOMAIN='libretools'
+export TEXTDOMAINDIR='/usr/share/locale'
+
+if type gettext &>/dev/null; then
+ _() { gettext "$@"; }
+else
+ _() { echo "$@"; }
+fi
diff --git a/src/lib/libremessages b/src/lib/libremessages
index c9b6b83..46a45fb 100755
--- a/src/lib/libremessages
+++ b/src/lib/libremessages
@@ -30,27 +30,85 @@
. $(librelib common.sh)
################################################################################
-# gettext initialization #
-################################################################################
-
-export TEXTDOMAIN='libretools'
-export TEXTDOMAINDIR='/usr/share/locale'
-
-################################################################################
# Own functions #
################################################################################
-# Usage: print fmt arg1 arg2...
+panic() {
+ echo "$(_ 'panic: malformed call to internal function')" >&2
+ exit 1
+}
+
+# Usage: print MESG ARG1 ARG2...
# Like printf, but gettext-aware, and prints a trailing newline
print() {
- local fmt=$1
+ [[ $# -ge 1 ]] || panic
+ local mesg="$(_ "$1")"
shift
- printf -- "$(gettext "$fmt")\n" "$@"
+ printf -- "$mesg\n" "$@"
+}
+
+# Do HTML-style whitespace collapsing on standard IO. It considers newline,
+# tab, and space to be whitespace.
+_html_whitespace_collapse() {
+ [[ $# == 0 ]] || panic
+ tr '\n' ' ' | sed -r -e 's/\t/ /g' -e 's/ +/ /g'
+}
+
+
+# Usage: prose MESG
+# Do HTML-style whitespace collapsing on the first argument, translate it
+# (gettext), then word-wrap it to 75 columns.
+# This is useful for printing a paragraph of prose in --help text.
+prose() {
+ [[ $# -ge 1 ]] || panic
+ local mesg="$(_ "$(_html_whitespace_collapse <<<"$1")")"; shift
+ printf -- "$mesg" "$@" | fmt -u
+}
+
+# Usage: bullet MESG
+# Like prose, but print a bullet "-" before the first line, and indent the
+# remaining lines.
+bullet() {
+ [[ $# -ge 1 ]] || panic
+ local mesg="$(_ "$(_html_whitespace_collapse <<<"$1")")"; shift
+ # Wrap the text to 71 columns; 75 (the default) minus a 4 column indent
+ printf -- "$mesg" "$@" | fmt -u -w 71 | sed -e '1s/^/ - /' -e '2,$s/^/ /'
+}
+
+# Usage: flag FLAG DESCRIPTION
+# Print a flag and description formatted for --help text.
+# ex: flag '-C <FILE>' 'Use this file instead of pacman.conf'
+# The description is fed through gettext, the flag is not, so if part of the
+# flag needs to be translated, you must do that yourself:
+# ex: flag "-C <$(_ FILE)>" 'Use this file instead of pacman.conf'
+# If you want to line-break the description in the source, so it isn't
+# crazy-long, feel free, it is reflowed/wrapped the same way as prose and
+# bullet.
+flag() {
+ [[ $# == 2 ]] || panic
+ local n='
+'
+ local flag=$1
+ local desc="$(_ "$(_html_whitespace_collapse <<<"$2")")"
+
+ declare -i indent=13
+ while [[ $indent -le ${#flag} ]]; do
+ indent=$((indent+8))
+ done
+
+ local lines
+ IFS=$n lines=($(fmt -u -w $((73-indent)) <<<"$desc"))
+ local line
+ for line in "${lines[@]}"; do
+ printf " %-${indent}s %s\n" "$flag" "$line"
+ flag=''
+ done
}
# Usage: term_title This will be the term title
# Sets the terminal title
term_title() {
+ [[ $# -ge 1 ]] || panic
local fmt=''
case "$TERM" in
screen|tmux) fmt='\ek%s\e\\';;