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/* cdw
* Copyright (C) 2002 Varkonyi Balazs
* Copyright (C) 2007 - 2012 Kamil Ignacak
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <stdbool.h>
#include "cdw_processwin.h"
#include "cdw_regex_dispatch.h"
#include "cdw_dvd_rw_format_regex.h"
#include "cdw_thread.h" /* PIPE_BUFFER_SIZE */
#include "cdw_debug.h"
/* extern char stdout_pipe_buffer[PIPE_BUFFER_SIZE + 1]; */
extern char stderr_pipe_buffer[PIPE_BUFFER_SIZE + 1];
bool dvd_rw_format_pipe_regexp_performed;
static regex_t eregex1;
static regmatch_t *ematches1 = NULL;
/* there is one operation that needs to be done the first time
a handler is called, and this is a flag for it */
static bool first_call_to_handler = true;
static void cdw_dvd_rw_format_handle_blanking(regex_t *eregex, regmatch_t *ematches);
/* regular expressions setup code */
void cdw_dvd_rw_format_stderr_regexp_prepare(void)
{
dvd_rw_format_pipe_regexp_performed = false;
first_call_to_handler = true;
/* "blanking 85.1%" */
/* "formatting 85.1%" */
/* currently cdw utilizes dvd+rw-format only to blank media;
dvd+rw-format erases DVD-RW by normal blanking ("blanking 85.1%"
is displayed); DVD+RW is erased by formatting ("formatting 85.1%" is
displayed */
/* don't put 'blanking' nor 'formatting' into regexp because
dvd+rw-format puts '^H' bytes between it and percent value */
int rv = regcomp(&eregex1, "([0-9]+)([.]*)([0-9]*)%", REG_EXTENDED);
ematches1 = (regmatch_t *) calloc(1, (eregex1.re_nsub + 1) * sizeof(regmatch_t));
if (rv) {
cdw_regex_regcomp_error_handler(__func__, rv, &eregex1, 501);
}
return;
}
void cdw_dvd_rw_format_stderr_regexp_execute(void)
{
cdw_vdm ("INFO: stderr_pipe_buffer before cleaning = \"%s\"\n", stderr_pipe_buffer);
/* remove funny characters from buffer, but don't operate on whole
string - only few first chars are interesting */
int line_width = 80;
for (int i = 0; i < line_width && i < PIPE_BUFFER_SIZE; i++) {
if (!isprint(stderr_pipe_buffer[i])) {
if (stderr_pipe_buffer[i] == '\0') {
break;
} else if (stderr_pipe_buffer[i] == '\r'
|| stderr_pipe_buffer[i] == '\n'
|| stderr_pipe_buffer[i] == '\b') {
stderr_pipe_buffer[i] = '\0';
break;
} else {
stderr_pipe_buffer[i] = ' ';
}
}
}
cdw_vdm ("INFO: stderr_pipe_buffer after cleaning = \"%s\"\n", stderr_pipe_buffer);
int rv = regexec(&eregex1, stderr_pipe_buffer, eregex1.re_nsub + 1, ematches1, 0);
if (rv == 0) {
if (first_call_to_handler) {
first_call_to_handler = false;
/* this erases "preparing, please wait" message displayed by
dvd_rw_format_interface.c module */
cdw_processwin_display_sub_info("");
}
cdw_sdm ("calling cdw_dvd_rw_format_handle_blanking() (stderr)\n");
cdw_dvd_rw_format_handle_blanking(&eregex1, ematches1);
}
return;
}
void cdw_dvd_rw_format_stderr_regexp_destroy(void)
{
regfree(&eregex1);
free(ematches1);
ematches1 = NULL;
return;
}
void cdw_dvd_rw_format_handle_blanking(regex_t *regex, regmatch_t *matches)
{
cdw_sdm ("called\n");
dvd_rw_format_pipe_regexp_performed = true;
/* regexp for catching blanking / formatting is
1 2 3
([0-9]+)([.]*)([0-9]*)% */
cdw_regex_assert_subex_number(regex->re_nsub, 3);
int perc_decimal = 0, perc_fract = 0;
for (unsigned int i = 1; i <= regex->re_nsub; i++) {
if (i == 2) {
continue;
}
char submatch[PIPE_BUFFER_SIZE];
int len = cdw_regex_get_submatch(matches, i, stderr_pipe_buffer, submatch);
if (len == -1) {
cdw_vdm ("ERROR: len of subexpr %d is negative: %d\n", i, len);
continue;
}
if (i == 1) { /* percentage - decimal part */
if (!strcmp(submatch, "??")) {
perc_decimal = 0;
} else {
perc_decimal = atoi((char *) &submatch);
}
cdw_vdm ("INFO: submatch %d, decimal part = \"%s\" -> %d\n", i, submatch, perc_decimal);
} else if (i == 3) { /* percentage - fractional part */
if (!strcmp(submatch, "??")) {
perc_fract = 0;
} else {
perc_fract = atoi((char *) &submatch);
}
cdw_vdm ("INFO: submatch %d, fractional part = \"%s\" -> %d\n", i, submatch, perc_fract);
} else {
;
}
}
/* float percent = perc_a + 0.1 * perc_b; */
/* NOTE: consider implementing
conditional_processwin_display_progress_float(float done, long total, char *string) */
/* display data */
cdw_processwin_display_progress_conditional(perc_decimal, 100, (char *) NULL);
return;
}
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