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| | /* notmuch - Not much of an email program, (just index and search)
*
* Copyright © 2009 Carl Worth
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see http://www.gnu.org/licenses/ .
*
* Author: Carl Worth <cworth@cworth.org>
*/
#include "notmuch-client.h"
/* Read a single query string from STDIN, using
* 'ctx' as the talloc owner for all allocations.
*
* This function returns NULL in case of insufficient memory or read
* errors.
*/
static char *
query_string_from_stdin (void *ctx)
{
char *query_string;
char buf[4096];
ssize_t remain;
query_string = talloc_strdup (ctx, "");
if (query_string == NULL)
return NULL;
for (;;) {
remain = read (STDIN_FILENO, buf, sizeof(buf) - 1);
if (remain == 0)
break;
if (remain < 0) {
if (errno == EINTR)
continue;
fprintf (stderr, "Error: reading from standard input: %s\n",
strerror (errno));
return NULL;
}
buf[remain] = '\0';
query_string = talloc_strdup_append (query_string, buf);
if (query_string == NULL)
return NULL;
}
return query_string;
}
/* Construct a single query string from the passed arguments, using
* 'ctx' as the talloc owner for all allocations.
*
* Currently, the arguments are just connected with space characters,
* but we might do more processing in the future, (such as inserting
* any AND operators needed to work around Xapian QueryParser bugs).
*
* This function returns NULL in case of insufficient memory.
*/
char *
query_string_from_args (void *ctx, int argc, char *argv[])
{
char *query_string;
int i;
if ((argc == 1) && (strcmp ("-", argv[0]) == 0))
return query_string_from_stdin (ctx);
query_string = talloc_strdup (ctx, "");
if (query_string == NULL)
return NULL;
for (i = 0; i < argc; i++) {
if (i != 0) {
query_string = talloc_strdup_append (query_string, " ");
if (query_string == NULL)
return NULL;
}
query_string = talloc_strdup_append (query_string, argv[i]);
if (query_string == NULL)
return NULL;
}
return query_string;
}
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