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virsh.c: generate each "virsh help COMMAND"s synopsis

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* src/virsh.c: Also, diagnose extra arguments after --help (-h).
This commit is contained in:
Jim Meyering 2008-12-08 13:14:48 +00:00
parent 62db1b13f7
commit 6f61232852
2 changed files with 61 additions and 42 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
Mon 8 Dec 2008 13:22:06 +0100 Jim Meyering <meyering@redhat.com>
virsh.c: generate each "virsh help COMMAND"s synopsis
* src/virsh.c: Also, diagnose extra arguments after --help (-h).
Mon Dec 8 12:00:53 GMT 2008 Daniel P. Berrange <berrange@redhat.com>
* qemud/Makefile.am: Fix mixup between _LDFLAGS & _LDADD

58
src/virsh.c
View File

@ -224,7 +224,7 @@ static void vshError(vshControl *ctl, int doexit, const char *format, ...)
ATTRIBUTE_FORMAT(printf, 3, 4);
static int vshInit(vshControl *ctl);
static int vshDeinit(vshControl *ctl);
static void vshUsage(vshControl *ctl, const char *cmdname);
static void vshUsage(void);
static void vshOpenLogFile(vshControl *ctl);
static void vshOutputLogFile(vshControl *ctl, int log_level, const char *format, va_list ap);
static void vshCloseLogFile(vshControl *ctl);
@ -233,7 +233,7 @@ static int vshParseArgv(vshControl *ctl, int argc, char **argv);
static const char *vshCmddefGetInfo(const vshCmdDef *cmd, const char *info);
static const vshCmdDef *vshCmddefSearch(const char *cmdname);
static int vshCmddefHelp(vshControl *ctl, const char *name, int withprog);
static int vshCmddefHelp(vshControl *ctl, const char *name);
static vshCmdOpt *vshCommandOpt(const vshCmd *cmd, const char *name);
static int vshCommandOptInt(const vshCmd *cmd, const char *name, int *found);
@ -361,7 +361,7 @@ cmdHelp(vshControl *ctl, const vshCmd *cmd)
N_(vshCmddefGetInfo(def, "help")));
return TRUE;
}
return vshCmddefHelp(ctl, cmdname, FALSE);
return vshCmddefHelp(ctl, cmdname);
}
/*
@ -5803,7 +5803,7 @@ vshCmddefSearch(const char *cmdname)
}
static int
vshCmddefHelp(vshControl *ctl, const char *cmdname, int withprog)
vshCmddefHelp(vshControl *ctl, const char *cmdname)
{
const vshCmdDef *def = vshCmddefSearch(cmdname);
@ -5811,30 +5811,46 @@ vshCmddefHelp(vshControl *ctl, const char *cmdname, int withprog)
vshError(ctl, FALSE, _("command '%s' doesn't exist"), cmdname);
return FALSE;
} else {
const vshCmdOptDef *opt;
const char *desc = N_(vshCmddefGetInfo(def, "desc"));
const char *help = N_(vshCmddefGetInfo(def, "help"));
const char *syntax = vshCmddefGetInfo(def, "syntax");
char buf[256];
fputs(_(" NAME\n"), stdout);
fprintf(stdout, " %s - %s\n", def->name, help);
if (syntax) {
fputs(_("\n SYNOPSIS\n"), stdout);
if (!withprog)
fprintf(stdout, " %s\n", syntax);
fprintf(stdout, " %s", def->name);
if (def->opts) {
const vshCmdOptDef *opt;
for (opt = def->opts; opt->name; opt++) {
const char *fmt;
if (opt->type == VSH_OT_BOOL)
fmt = "[--%s]";
else if (opt->type == VSH_OT_INT)
fmt = N_("[--%s <number>]");
else if (opt->type == VSH_OT_STRING)
fmt = N_("[--%s <string>]");
else if (opt->type == VSH_OT_DATA)
fmt = ((opt->flag & VSH_OFLAG_REQ) ? "<%s>" : "[<%s>]");
else
fprintf(stdout, " %s %s\n", progname, syntax);
assert(0);
fputc(' ', stdout);
fprintf(stdout, _(fmt), opt->name);
}
if (desc) {
}
fputc('\n', stdout);
if (desc[0]) {
/* FIXME: remove this test once all of the empty descriptions
have been removed; see `FIXME: describe' lines. */
fputs(_("\n DESCRIPTION\n"), stdout);
fprintf(stdout, " %s\n", desc);
}
if (def->opts) {
const vshCmdOptDef *opt;
fputs(_("\n OPTIONS\n"), stdout);
for (opt = def->opts; opt->name; opt++) {
char buf[256];
if (opt->type == VSH_OT_BOOL)
snprintf(buf, sizeof(buf), "--%s", opt->name);
else if (opt->type == VSH_OT_INT)
@ -6912,12 +6928,9 @@ vshDeinit(vshControl *ctl)
* Print usage
*/
static void
vshUsage(vshControl *ctl, const char *cmdname)
vshUsage(void)
{
const vshCmdDef *cmd;
/* global help */
if (!cmdname) {
fprintf(stdout, _("\n%s [options] [commands]\n\n"
" options:\n"
" -c | --connect <uri> hypervisor connection URI\n"
@ -6939,9 +6952,6 @@ vshUsage(vshControl *ctl, const char *cmdname)
_("\n (specify help <command> for details about the command)\n\n"));
return;
}
if (!vshCmddefHelp(ctl, cmdname, TRUE))
exit(EXIT_FAILURE);
}
/*
* argv[]: virsh [options] [command]
@ -7038,8 +7048,12 @@ vshParseArgv(vshControl *ctl, int argc, char **argv)
}
if (help) {
/* global or command specific help */
vshUsage(ctl, argc > end ? argv[end] : NULL);
if (end < argc)
vshError(ctl, TRUE,
_("extra argument '%s'. See --help."), argv[end]);
/* list all command */
vshUsage();
exit(EXIT_SUCCESS);
}