harfbuzz/util/batch.hh

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/*
* Copyright © 2021 Behdad Esfahbod
*
* This is part of HarfBuzz, a text shaping library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*/
#ifndef BATCH_HH
#define BATCH_HH
typedef int (*main_func_t) (int argc, char **argv);
template <typename main_t, bool report_status=false>
int
batch_main (int argc, char **argv)
{
if (argc == 2 && !strcmp (argv[1], "--batch"))
{
int ret = 0;
char buf[4092];
while (fgets (buf, sizeof (buf), stdin))
{
size_t l = strlen (buf);
if (l && buf[l - 1] == '\n') buf[l - 1] = '\0';
char *args[64];
argc = 0;
args[argc++] = argv[0];
char *p = buf, *e;
args[argc++] = p;
while ((e = strchr (p, ';')) && argc < (int) ARRAY_LENGTH (args))
{
*e++ = '\0';
while (*e == ';')
e++;
args[argc++] = p = e;
}
int result = main_t () (argc, args);
if (report_status)
fprintf (stdout, result == 0 ? "success\n" : "failure\n");
fflush (stdout);
ret = MAX (ret, result);
}
return ret;
}
return main_t () (argc, argv);
}
#endif