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ps: generalize help text logic, add related translator hints

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This commit represents an experiment in nls help text support.

The word --help itself been made translatable along with the
help section names and their abbreviations.  Thus, the work of
the translators will ultimately alter program run-time behavior.

Perhaps someday all "long" options can behave in a similar way
which could offer a considerable benefit to other languages.
Instead of translationg just option descriptions, the long
forms of those options could also be transalated.

This commit also:
 . includes the section abbreviations in --help output
 . isolates all --help support in the ps/help.c module
 . provides (hopefully) meaningful Translator guidance
 . removes --help support from the ps/common.h header
 . removes --help support from the ps/parser.c module
 . eliminates tabs in line with the style of other ps modules
 . eliminates the need for the include/c.h header file
This commit is contained in:
Jim Warner
2012-01-02 01:33:34 -06:00
committed by Craig Small
parent b8c3288594
commit 4fb48c0bdb
5 changed files with 214 additions and 131 deletions
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277
ps/help.c
View File

@ -12,101 +12,196 @@
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "common.h"
void usage(FILE * out, int section) NORETURN;
void usage(FILE * out, int section){
fputs(USAGE_HEADER, out);
fprintf(out,
_(" %s [options]\n"), program_invocation_short_name);
if (section == USAGE_SELECTION || section == USAGE_ALL) {
fputs(_("\nSimple options:\n"
" -A all processes\n"
" -N, --deselect negate selection\n"
" -a all without tty and session leader\n"
" -d all except session leader\n"
" -e all processes\n"
" T all processes on this terminal\n"
" a all without tty, including other users\n"
" g obsolete, do not use\n"
" r only running processes\n"
" x processes without controlling ttys\n"), out);
}
if (section == USAGE_LIST || section == USAGE_ALL) {
fputs(_("\nSelection by list:\n"
" -C <command> command name\n"
" U, -u, --user <uid> effective user id or name\n"
" -U, --User <uid> real user id or name\n"
" -G, --Group <gid> real group id or name\n"
" -g, --group <group> session or effective group name\n"
" -p, --pid <pid> process id\n"
" --ppid <pid> select by parent process id\n"
" -s, --sid <session> session id\n"
" t, -t, --tty <tty> terminal\n"
"\n selection <arguments> take csv list e.g. `-u root,nobody'\n"), out);
}
if (section == USAGE_OUTPUT || section == USAGE_ALL) {
fputs(_("\nOutput formats:\n"
" o, -o, --format <format>"
" user defined format\n"
" O <format> preloaded -o allowing sorting\n"
" -O <format> preloaded, with default columns, allowing sorting\n"
" -j jobs format\n"
" j BSD job control format\n"
" -l long format\n"
" l BSD long format\n"
" y do not show flags, show rrs in place addr (used with -l)\n"
" -f full-format\n"
" -F extra full\n"
" s signal format\n"
" v virtual memory\n"
" u user-oriented format\n"
" X register format\n"
" Z, -M security data (for SE Linux)\n"
" f, --forest ascii art process tree\n"
" -H show process hierarchy\n"
" --context display security context (for SE Linux)\n"
" --heading repeat header lines\n"
" --no-headers do not print header at all\n"
" --cols <num> set screen width\n"
" --rows <num> set screen height\n"), out);
}
if (section == USAGE_THREADS || section == USAGE_ALL) {
fputs(_("\nShow threads:\n"
" H as if they where processes\n"
" -L possibly with LWP and NLWP columns\n"
" -T possibly with SPID column\n"
" m, -m after processes\n"), out);
}
if (section == USAGE_MISC || section == USAGE_ALL) {
fputs(_("\nMisc options:\n"
" w, -w unlimited output width\n"
" L list format codes\n"
" c true command name\n"
" n display numeric uid and wchan\n"
" -y do not show flags, show rss (only with -l)\n"
" -c show scheduling class\n"
" --sort <spec> specify sort order, can be a csv list\n"
" S, --cumulative include some dead child process data\n"
" --info print debuggin information\n"
" V,-V, --version display version information and exit\n"
" --help <selection|list|output|threads|misc|all>\n"
" display help\n"), out);
}
if (section == USAGE_DEFAULT)
/* Translation Hint: do not translate arguments, that breaks
* string comparison. Outputting something like following
* might work.
*
* Zry `%s --help <selection|list|output|threads|misc|all>
* (zlekzio|lizt|czreen vrites|threadz|mizc|trezt)
*/
fprintf(out, _("\n Try `%s --help <selection|list|output|threads|misc|all>'\n"
" for more information.\n"), program_invocation_short_name);
fprintf(out, USAGE_MAN_TAIL("ps(1)"));
exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS);
enum {
HELP_SMP, HELP_LST, HELP_OUT,
HELP_THD, HELP_MSC, HELP_ALL,
HELP_default
};
static struct {
const char *word;
const char *abrv;
} help_tab[HELP_default];
static int parse_help_opt (const char *opt) {
/* Translation Notes for ps Help #1 ---------------------------------
. This next group of lines represents 6 pairs of words + abbreviations
. which are the basis of the 'ps' program help text.
.
. The words and abbreviations you provide will alter program behavior.
. They will also appear in the help usage summary associated with the
. "Notes for ps Help #2" below.
.
. In their English form, help text would look like this:
. Try 'ps --help <simple|list|output|threads|misc|all>'
. or 'ps --help <s|l|o|t|m|a>'
. for additional help text.
.
. When translating these 6 pairs you may choose any appropriate
. language equivalents and the only requirement is the abbreviated
. representations must be unique.
.
. By default, those abbreviations are single characters. However,
. they are not limited to only one character after translation.
. */
/* Translation Hint, Pair #1 */
help_tab[HELP_SMP].word = _("simple"); help_tab[HELP_SMP].abrv = _("s");
/* Translation Hint, Pair #2 */
help_tab[HELP_LST].word = _("list"); help_tab[HELP_LST].abrv = _("l");
/* Translation Hint, Pair #3 */
help_tab[HELP_OUT].word = _("output"); help_tab[HELP_OUT].abrv = _("o");
/* Translation Hint, Pair #4 */
help_tab[HELP_THD].word = _("threads"); help_tab[HELP_THD].abrv = _("t");
/* Translation Hint, Pair #5 */
help_tab[HELP_MSC].word = _("misc"); help_tab[HELP_MSC].abrv = _("m");
/* Translation Hint, Pair #6 */
help_tab[HELP_ALL].word = _("all"); help_tab[HELP_ALL].abrv = _("a");
/*
* the above are doubled on each line so they carry the same .pot
* line # reference and thus appear more like true "pairs" even
* though xgettext will produce separate msgid/msgstr groups */
if(opt) {
int i;
for (i = HELP_SMP; i < HELP_default; i++)
if (!strcmp(opt, help_tab[i].word) || !strcmp(opt, help_tab[i].abrv))
return i;
}
return HELP_default;
}
void do_help (const char *opt, int rc) NORETURN;
void do_help (const char *opt, int rc) {
FILE *out = (rc == EXIT_SUCCESS) ? stdout : stderr;
int section = parse_help_opt(opt);
fprintf(out, _("\n"
"Usage:\n"
" %s [options]\n"), myname);
if (section == HELP_SMP || section == HELP_ALL) {
fprintf(out, _("\n"
"Basic options:\n"
" -A, -e all processes\n"
" -a all with tty, except session leaders\n"
" a all with tty, including other users\n"
" -d all except session leaders\n"
" -N, --deselect negate selection\n"
" r only running processes\n"
" T all processes on this terminal\n"
" x processes without controlling ttys\n"));
}
if (section == HELP_LST || section == HELP_ALL) {
fprintf(out, _("\n"
"Selection by list:\n"
" -C <command> command name\n"
" -G, --Group <gid> real group id or name\n"
" -g, --group <group> session or effective group name\n"
" -p, --pid <pid> process id\n"
" --ppid <pid> select by parent process id\n"
" -s, --sid <session> session id\n"
" -t, t, --tty <tty> terminal\n"
" -u, U, --user <uid> effective user id or name\n"
" -U, --User <uid> real user id or name\n"
"\n"
" selection <arguments> take either:\n"
" comma-separated list e.g. '-u root,nobody' or\n"
" blank-separated list e.g. '-p 123 4567'\n"));
}
if (section == HELP_OUT || section == HELP_ALL) {
fprintf(out, _("\n"
"Output formats:\n"
" -F extra full\n"
" -f full-format, including command lines\n"
" f, --forest ascii art process tree\n"
" -H show process hierarchy\n"
" -j jobs format\n"
" j BSD job control format\n"
" -l long format\n"
" l BSD long format\n"
" -M, Z add security data (for SE Linux)\n"
" -O <format> preloaded with default columns\n"
" O <format> as -O, with BSD personality\n"
" -o, o, --format <format>\n"
" user defined format\n"
" s signal format\n"
" u user-oriented format\n"
" v virtual memory format\n"
" X register format\n"
" -y do not show flags, show rrs vs. addr (used with -l)\n"
" --context display security context (for SE Linux)\n"
" --headers repeat header lines, one per page\n"
" --no-headers do not print header at all\n"
" --cols, --columns, --width <num>\n"
" set screen width\n"
" --rows, --lines <num>\n"
" set screen height\n"));
}
if (section == HELP_THD || section == HELP_ALL) {
fprintf(out, _("\n"
"Show threads:\n"
" H as if they where processes\n"
" -L possibly with LWP and NLWP columns\n"
" -m, m after processes\n"
" -T possibly with SPID column\n"));
}
if (section == HELP_MSC || section == HELP_ALL) {
fprintf(out, _("\n"
"Miscellaneous options:\n"
" -c show scheduling class with -l option\n"
" c show true command name\n"
" e show the environment after command\n"
" k, --sort specify sort order as: [+|-]key[,[+|-]key[,...]]\n"
" L list format specifiers\n"
" n display numeric uid and wchan\n"
" S, --cumulative include some dead child process data\n"
" -y do not show flags, show rss (only with -l)\n"
" -V, V, --version display version information and exit\n"
" -w, w unlimited output width\n"
"\n"
" --%s <%s|%s|%s|%s|%s|%s>\n"
" display help and exit\n")
, the_word_help
, help_tab[HELP_SMP].word, help_tab[HELP_LST].word
, help_tab[HELP_OUT].word, help_tab[HELP_THD].word
, help_tab[HELP_MSC].word, help_tab[HELP_ALL].word);
}
if (section == HELP_default) {
/* Translation Notes for ps Help #2 ---------------------------------
. Most of the following c-format string is derived from the 6
. pairs of words + chars mentioned above in "Notes for ps Help #1".
.
. In its full English form, help text would look like this:
. Try 'ps --help <simple|list|output|threads|misc|all>'
. or 'ps --help <s|l|o|t|m|a>'
. for additional help text.
.
. The word for "help" will be translated elsewhere. Thus, the only
. translations below will be: "Try", "or" and "for additional...".
. */
fprintf(out, _("\n"
" Try '%s --%s <%s|%s|%s|%s|%s|%s>'\n"
" or '%s --%s <%s|%s|%s|%s|%s|%s>'\n"
" for additional help text.\n")
, myname, the_word_help
, help_tab[HELP_SMP].word, help_tab[HELP_LST].word
, help_tab[HELP_OUT].word, help_tab[HELP_THD].word
, help_tab[HELP_MSC].word, help_tab[HELP_ALL].word
, myname, the_word_help
, help_tab[HELP_SMP].abrv, help_tab[HELP_LST].abrv
, help_tab[HELP_OUT].abrv, help_tab[HELP_THD].abrv
, help_tab[HELP_MSC].abrv, help_tab[HELP_ALL].abrv);
}
fprintf(out, _("\nFor more details see ps(1).\n"));
exit(rc);
}
/* Missing: