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vte/src/slowcat.c
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/* | |
* Copyright (C) 2002 Red Hat, Inc. | |
* | |
* This library is free software: you can redistribute it and/or modify | |
* it under the terms of the GNU Lesser General Public License as published | |
* by the Free Software Foundation, either version 3 of the License, or | |
* (at your option) any later version. | |
* | |
* This library 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 Lesser General Public License for more details. | |
* | |
* You should have received a copy of the GNU Lesser General Public License | |
* along with this library. If not, see <https://www.gnu.org/licenses/>. | |
*/ | |
#include <config.h> | |
#include <sys/time.h> | |
#include <sys/types.h> | |
#include <errno.h> | |
#include <signal.h> | |
#include <stdio.h> | |
#include <stdlib.h> | |
#include <string.h> | |
#include <unistd.h> | |
#include <glib.h> | |
static void | |
catfile(const char *pathname, long delay, long chunksize) | |
{ | |
FILE *fp; | |
struct timeval tv; | |
char *buf; | |
int c; | |
long i; | |
if (!((pathname == NULL) || (strcmp(pathname, "-") == 0))) { | |
fp = fopen(pathname, "r"); | |
if (fp == NULL) { | |
g_warning("Error opening file `%s': %s.\n", | |
pathname, strerror(errno)); | |
return; | |
} | |
} else { | |
fp = stdin; | |
} | |
buf = g_malloc(chunksize); | |
while (!feof(fp)) { | |
tv.tv_sec = delay / 1000000; | |
tv.tv_usec = delay % 1000000; | |
select(0, NULL, NULL, NULL, &tv); | |
for (i = 0; i < chunksize; i++) { | |
c = fgetc(fp); | |
if (c != EOF) { | |
buf[i] = c; | |
} else { | |
break; | |
} | |
} | |
if (i > 0) { | |
int bytes G_GNUC_UNUSED; | |
bytes = write(STDOUT_FILENO, buf, i); | |
fsync(STDOUT_FILENO); | |
} | |
} | |
g_free(buf); | |
if (fp != stdin) { | |
fclose(fp); | |
} | |
} | |
int | |
main(int argc, char **argv) | |
{ | |
int i, c; | |
long delay = 200000, chunksize = 1, tmp; | |
char *p; | |
GList *files = NULL, *file; | |
while ((c = getopt(argc, argv, "t:c:")) != -1) { | |
switch (c) { | |
case 't': | |
tmp = strtol(optarg, &p, 0); | |
if ((p != NULL) && (*p == '\0')) { | |
delay = tmp; | |
} | |
break; | |
case 'c': | |
tmp = strtol(optarg, &p, 0); | |
if ((p != NULL) && (*p == '\0')) { | |
chunksize = tmp; | |
} | |
break; | |
default: | |
g_printerr("Usage: slowcat [-t delay] [-c chunksize] [file ...]\n"); | |
exit(1); | |
break; | |
} | |
} | |
for (i = optind; i < argc; i++) { | |
files = g_list_append(files, argv[i]); | |
} | |
if (files) { | |
for (file = files; file != NULL; file = g_list_next(file)) { | |
catfile((const char*)file->data, delay, chunksize); | |
} | |
} else { | |
catfile(NULL, delay, chunksize); | |
} | |
return 0; | |
} |