ref: 543588d355ac930d249694efb6bdabaa789f4b50
dir: /src/util.c/
/*
* util.c.
* Utility functions mostly related to logging.
*
* July 5, 1991
* Copyright 1991 Lance Norskog And Sundry Contributors
* This source code is freely redistributable and may be used for
* any purpose. This copyright notice must be maintained.
* Lance Norskog And Sundry Contributors are not responsible for
* the consequences of using this software.
*/
#include "sox_i.h"
#include <assert.h>
#include <stddef.h>
#include <string.h>
#include <strings.h>
#include <ctype.h>
#include <stdarg.h>
sox_size_t sox_bufsiz = 8192;
sox_output_message_handler_t sox_output_message_handler = NULL;
unsigned sox_output_verbosity_level = 2;
sox_global_info_t sox_global_info;
sox_effects_global_info_t effects_global_info =
{sox_false, 1, &sox_global_info};
void sox_output_message(FILE *file, const char *filename, const char *fmt, va_list ap)
{
char buffer[10];
char const * handler_name;
char const * dot_pos;
handler_name = strrchr(filename, '/');
if (handler_name != NULL) {
++handler_name;
} else {
handler_name = strrchr(filename, '\\');
if (handler_name != NULL)
++handler_name;
else
handler_name = filename;
}
dot_pos = strrchr(handler_name, '.');
if (dot_pos != NULL && dot_pos - handler_name <= (ptrdiff_t)(sizeof(buffer) - 1)) {
strncpy(buffer, handler_name, (size_t)(dot_pos - handler_name));
buffer[dot_pos - handler_name] = '\0';
handler_name = buffer;
}
fprintf(file, "%s: ", handler_name);
vfprintf(file, fmt, ap);
}
/* This is a bit of a hack. It's useful to have libSoX
* report which format or effect handler is outputing
* the message. Using the filename for this purpose is only an
* approximation, but it saves a lot of work. ;)
*/
char const * sox_message_filename = 0;
static void sox_emit_message(unsigned level, char const *fmt, va_list ap)
{
if (sox_output_message_handler != NULL)
(*sox_output_message_handler)(level, sox_message_filename, fmt, ap);
}
#undef sox_fail
#undef sox_warn
#undef sox_report
#undef sox_debug
#undef sox_debug_more
#undef sox_debug_most
#define SOX_MESSAGE_FUNCTION(name,level) \
void name(char const * fmt, ...) \
{ \
va_list args; \
\
va_start(args, fmt); \
sox_emit_message(level, fmt, args); \
va_end(args); \
}
SOX_MESSAGE_FUNCTION(sox_fail , 1)
SOX_MESSAGE_FUNCTION(sox_warn , 2)
SOX_MESSAGE_FUNCTION(sox_report, 3)
SOX_MESSAGE_FUNCTION(sox_debug , 4)
SOX_MESSAGE_FUNCTION(sox_debug_more , 5)
SOX_MESSAGE_FUNCTION(sox_debug_most , 6)
#undef SOX_MESSAGE_FUNCTION
void sox_fail_errno(sox_format_t * ft, int sox_errno, const char *fmt, ...)
{
va_list args;
ft->sox_errno = sox_errno;
va_start(args, fmt);
#ifdef HAVE_VSNPRINTF
vsnprintf(ft->sox_errstr, sizeof(ft->sox_errstr), fmt, args);
#else
vsprintf(ft->sox_errstr, fmt, args);
#endif
va_end(args);
ft->sox_errstr[255] = '\0';
}
/*
* Check that we have a known format suffix string.
*/
int sox_gettype(sox_format_t * ft, sox_bool is_file_extension)
{
const char * const *list;
unsigned i;
if (!ft->filetype) {
sox_fail_errno(ft, SOX_EFMT, "Filetype was not specified");
return SOX_EFMT;
}
for (i = 0; i < sox_formats; i++) {
const sox_format_handler_t *f = sox_format_fns[i].fn();
if (is_file_extension && (f->flags & SOX_FILE_DEVICE))
continue; /* don't match device name in file name extensions */
for (list = f->names; *list; list++) {
const char *s1 = *list, *s2 = ft->filetype;
if (!strcasecmp(s1, s2))
break; /* not a match */
}
if (!*list)
continue;
/* Found it! */
ft->handler = f;
return SOX_SUCCESS;
}
sox_fail_errno(ft, SOX_EFMT, "File type `%s' is not known",
ft->filetype);
return SOX_EFMT;
}
/*
* sox_parsesamples
*
* Parse a string for # of samples. If string ends with a 's'
* then the string is interpreted as a user calculated # of samples.
* If string contains ':' or '.' or if it ends with a 't' then its
* treated as an amount of time. This is converted into seconds and
* fraction of seconds and then use the sample rate to calculate
* # of samples.
* Returns NULL on error, pointer to next char to parse otherwise.
*/
char const * sox_parsesamples(sox_rate_t rate, const char *str, sox_size_t *samples, int def)
{
int found_samples = 0, found_time = 0;
int time = 0;
long long_samples;
float frac = 0;
char const * end;
char const * pos;
sox_bool found_colon, found_dot;
for (end = str; *end && strchr("0123456789:.ts", *end); ++end);
if (end == str)
return NULL;
pos = strchr(str, ':');
found_colon = pos && pos < end;
pos = strchr(str, '.');
found_dot = pos && pos < end;
if (found_colon || found_dot || *(end-1) == 't')
found_time = 1;
else if (*(end-1) == 's')
found_samples = 1;
if (found_time || (def == 't' && !found_samples))
{
*samples = 0;
while(1)
{
if (str[0] != '.' && sscanf(str, "%d", &time) != 1)
return NULL;
*samples += time;
while (*str != ':' && *str != '.' && *str != 0)
str++;
if (*str == '.' || *str == 0)
break;
/* Skip past ':' */
str++;
*samples *= 60;
}
if (*str == '.')
{
if (sscanf(str, "%f", &frac) != 1)
return NULL;
}
*samples *= rate;
*samples += (rate * frac) + 0.5;
return end;
}
if (found_samples || (def == 's' && !found_time))
{
if (sscanf(str, "%ld", &long_samples) != 1)
return NULL;
*samples = long_samples;
return end;
}
return NULL;
}