333 строки
8.4 KiB
C
333 строки
8.4 KiB
C
/*
|
|
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
|
|
* University Research and Technology
|
|
* Corporation. All rights reserved.
|
|
* Copyright (c) 2004-2006 The University of Tennessee and The University
|
|
* of Tennessee Research Foundation. All rights
|
|
* reserved.
|
|
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
|
|
* University of Stuttgart. All rights reserved.
|
|
* Copyright (c) 2004-2005 The Regents of the University of California.
|
|
* All rights reserved.
|
|
* Copyright (c) 2008 Cisco Systems, Inc. All rights reserved.
|
|
* $COPYRIGHT$
|
|
*
|
|
* Additional copyrights may follow
|
|
*
|
|
* $HEADER$
|
|
*/
|
|
|
|
#include "opal_config.h"
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <locale.h>
|
|
#include <errno.h>
|
|
|
|
#include "opal/mca/installdirs/installdirs.h"
|
|
#include "opal/util/show_help.h"
|
|
#include "opal/util/show_help_lex.h"
|
|
#include "opal/util/printf.h"
|
|
#include "opal/util/argv.h"
|
|
#include "opal/util/os_path.h"
|
|
#include "opal/util/output.h"
|
|
#include "opal/constants.h"
|
|
|
|
|
|
/*
|
|
* Private variables
|
|
*/
|
|
static const char *default_filename = "help-messages";
|
|
static const char *dash_line = "--------------------------------------------------------------------------\n";
|
|
static int output_stream = -1;
|
|
|
|
|
|
int opal_show_help_init(void)
|
|
{
|
|
opal_output_stream_t lds;
|
|
|
|
OBJ_CONSTRUCT(&lds, opal_output_stream_t);
|
|
lds.lds_want_stderr = true;
|
|
output_stream = opal_output_open(&lds);
|
|
|
|
return OPAL_SUCCESS;
|
|
}
|
|
|
|
int opal_show_help_finalize(void)
|
|
{
|
|
opal_output_close(output_stream);
|
|
output_stream = -1;
|
|
return OPAL_SUCCESS;
|
|
}
|
|
|
|
/*
|
|
* Make one big string with all the lines. This isn't the most
|
|
* efficient method in the world, but we're going for clarity here --
|
|
* not optimization. :-)
|
|
*/
|
|
static int array2string(char **outstring,
|
|
bool want_error_header, char **lines)
|
|
{
|
|
int i, count;
|
|
size_t len;
|
|
|
|
/* See how much space we need */
|
|
|
|
len = want_error_header ? 2 * strlen(dash_line) : 0;
|
|
count = opal_argv_count(lines);
|
|
for (i = 0; i < count; ++i) {
|
|
if (NULL == lines[i]) {
|
|
break;
|
|
}
|
|
len += strlen(lines[i]) + 1;
|
|
}
|
|
|
|
/* Malloc it out */
|
|
|
|
(*outstring) = (char*) malloc(len + 1);
|
|
if (NULL == *outstring) {
|
|
return OPAL_ERR_OUT_OF_RESOURCE;
|
|
}
|
|
|
|
/* Fill the big string */
|
|
|
|
*(*outstring) = '\0';
|
|
if (want_error_header) {
|
|
strcat(*outstring, dash_line);
|
|
}
|
|
for (i = 0; i < count; ++i) {
|
|
if (NULL == lines[i]) {
|
|
break;
|
|
}
|
|
strcat(*outstring, lines[i]);
|
|
strcat(*outstring, "\n");
|
|
}
|
|
if (want_error_header) {
|
|
strcat(*outstring, dash_line);
|
|
}
|
|
|
|
return OPAL_SUCCESS;
|
|
}
|
|
|
|
|
|
/*
|
|
* Find the right file to open
|
|
*/
|
|
static int open_file(const char *base, const char *topic)
|
|
{
|
|
char *filename;
|
|
char *err_msg = NULL;
|
|
size_t base_len;
|
|
|
|
/* If no filename was supplied, use the default */
|
|
|
|
if (NULL == base) {
|
|
base = default_filename;
|
|
}
|
|
|
|
/* Try to open the file. If we can't find it, try it with a .txt
|
|
extension. */
|
|
|
|
filename = opal_os_path( false, opal_install_dirs.pkgdatadir, base, NULL );
|
|
opal_show_help_yyin = fopen(filename, "r");
|
|
if (NULL == opal_show_help_yyin) {
|
|
asprintf(&err_msg, "%s: %s", filename, strerror(errno));
|
|
base_len = strlen(base);
|
|
if (4 > base_len || 0 != strcmp(base + base_len - 4, ".txt")) {
|
|
free(filename);
|
|
asprintf(&filename, "%s%s%s.txt", opal_install_dirs.pkgdatadir,
|
|
OPAL_PATH_SEP, base);
|
|
opal_show_help_yyin = fopen(filename, "r");
|
|
}
|
|
}
|
|
free(filename);
|
|
|
|
/* If we still couldn't open it, then something is wrong */
|
|
|
|
if (NULL == opal_show_help_yyin) {
|
|
opal_output(output_stream, "%sSorry! You were supposed to get help about:\n %s\nBut I couldn't open the help file:\n %s. Sorry!\n%s", dash_line, topic, err_msg, dash_line);
|
|
free(err_msg);
|
|
return OPAL_ERR_NOT_FOUND;
|
|
}
|
|
|
|
if (NULL != err_msg) {
|
|
free(err_msg);
|
|
}
|
|
|
|
/* Set the buffer */
|
|
|
|
opal_show_help_init_buffer(opal_show_help_yyin);
|
|
|
|
/* Happiness */
|
|
|
|
return OPAL_SUCCESS;
|
|
}
|
|
|
|
|
|
/*
|
|
* In the file that has already been opened, find the topic that we're
|
|
* supposed to output
|
|
*/
|
|
static int find_topic(const char *base, const char *topic)
|
|
{
|
|
int token, ret;
|
|
char *tmp;
|
|
|
|
/* Examine every topic */
|
|
|
|
while (1) {
|
|
token = opal_show_help_yylex();
|
|
switch (token) {
|
|
case OPAL_SHOW_HELP_PARSE_TOPIC:
|
|
tmp = strdup(opal_show_help_yytext);
|
|
if (NULL == tmp) {
|
|
return OPAL_ERR_OUT_OF_RESOURCE;
|
|
}
|
|
tmp[strlen(tmp) - 1] = '\0';
|
|
ret = strcmp(tmp + 1, topic);
|
|
free(tmp);
|
|
if (0 == ret) {
|
|
return OPAL_SUCCESS;
|
|
}
|
|
break;
|
|
|
|
case OPAL_SHOW_HELP_PARSE_MESSAGE:
|
|
break;
|
|
|
|
case OPAL_SHOW_HELP_PARSE_DONE:
|
|
opal_output(output_stream, "%sSorry! You were supposed to get help about:\n %s\nfrom the file:\n %s\nBut I couldn't find that topic in the file. Sorry!\n%s", dash_line, topic, base, dash_line);
|
|
return OPAL_ERR_NOT_FOUND;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Never get here */
|
|
}
|
|
|
|
|
|
/*
|
|
* We have an open file, and we're pointed at the right topic. So
|
|
* read in all the lines in the topic and make a list of them.
|
|
*/
|
|
static int read_topic(char ***array)
|
|
{
|
|
char *tmp;
|
|
int token;
|
|
|
|
while (1) {
|
|
token = opal_show_help_yylex();
|
|
switch (token) {
|
|
case OPAL_SHOW_HELP_PARSE_MESSAGE:
|
|
tmp = strdup(opal_show_help_yytext);
|
|
if (NULL == tmp) {
|
|
return OPAL_ERR_OUT_OF_RESOURCE;
|
|
}
|
|
opal_argv_append_nosize(array, tmp);
|
|
break;
|
|
|
|
default:
|
|
return OPAL_SUCCESS;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Never get here */
|
|
}
|
|
|
|
|
|
static int load_array(char ***array, const char *filename, const char *topic)
|
|
{
|
|
int ret;
|
|
|
|
if (OPAL_SUCCESS != (ret = open_file(filename, topic))) {
|
|
return ret;
|
|
}
|
|
if (OPAL_SUCCESS != (ret = find_topic(filename, topic))) {
|
|
fclose(opal_show_help_yyin);
|
|
return ret;
|
|
}
|
|
|
|
ret = read_topic(array);
|
|
opal_show_help_finish_parsing();
|
|
fclose(opal_show_help_yyin);
|
|
if (OPAL_SUCCESS != ret) {
|
|
opal_argv_free(*array);
|
|
return ret;
|
|
}
|
|
|
|
return OPAL_SUCCESS;
|
|
}
|
|
|
|
char *opal_show_help_vstring(const char *filename, const char *topic,
|
|
bool want_error_header, va_list arglist)
|
|
{
|
|
int rc;
|
|
char *single_string, *output, **array = NULL;
|
|
|
|
/* Load the message */
|
|
if (OPAL_SUCCESS != (rc = load_array(&array, filename, topic))) {
|
|
return NULL;
|
|
}
|
|
|
|
/* Convert it to a single raw string */
|
|
rc = array2string(&single_string, want_error_header, array);
|
|
|
|
if (OPAL_SUCCESS == rc) {
|
|
/* Apply the formatting to make the final output string */
|
|
vasprintf(&output, single_string, arglist);
|
|
free(single_string);
|
|
}
|
|
|
|
opal_argv_free(array);
|
|
return (OPAL_SUCCESS == rc) ? output : NULL;
|
|
}
|
|
|
|
char *opal_show_help_string(const char *filename, const char *topic,
|
|
bool want_error_handler, ...)
|
|
{
|
|
char *output;
|
|
va_list arglist;
|
|
|
|
va_start(arglist, want_error_handler);
|
|
output = opal_show_help_vstring(filename, topic, want_error_handler,
|
|
arglist);
|
|
va_end(arglist);
|
|
|
|
return output;
|
|
}
|
|
|
|
int opal_show_vhelp(const char *filename, const char *topic,
|
|
bool want_error_header, va_list arglist)
|
|
{
|
|
char *output;
|
|
|
|
/* Convert it to a single string */
|
|
output = opal_show_help_vstring(filename, topic, want_error_header,
|
|
arglist);
|
|
|
|
/* If we got a single string, output it with formatting */
|
|
if (NULL != output) {
|
|
opal_output(output_stream, output);
|
|
free(output);
|
|
}
|
|
|
|
return (NULL == output) ? OPAL_ERROR : OPAL_SUCCESS;
|
|
}
|
|
|
|
int opal_show_help(const char *filename, const char *topic,
|
|
bool want_error_header, ...)
|
|
{
|
|
va_list arglist;
|
|
int rc;
|
|
|
|
/* Convert it to a single string */
|
|
va_start(arglist, want_error_header);
|
|
rc = opal_show_vhelp(filename, topic, want_error_header, arglist);
|
|
va_end(arglist);
|
|
|
|
return rc;
|
|
}
|