ref: af36a8b50ad95196fdc21deac251919cd7bbd18a
dir: /sys/src/cmd/postscript/common/misc.c/
/*
*
* General purpose routines.
*
*/
#include <stdio.h>
#include <ctype.h>
#include <sys/types.h>
#include <fcntl.h>
#include "gen.h"
#include "ext.h"
#include "path.h"
int nolist = 0; /* number of specified ranges */
int olist[50]; /* processing range pairs */
/*****************************************************************************/
out_list(char *str)
{
int start, stop;
/*
*
* Grab page ranges from str, save them in olist[], and update the nolist
* count. Range syntax matches nroff/troff syntax.
*
*/
while ( *str && nolist < sizeof(olist) - 2 ) {
start = stop = str_convert(&str, 0);
if ( *str == '-' && *str++ )
stop = str_convert(&str, 9999);
if ( start > stop )
error(FATAL, "illegal range %d-%d", start, stop);
olist[nolist++] = start;
olist[nolist++] = stop;
if ( *str != '\0' ) str++;
} /* End while */
olist[nolist] = 0;
} /* End of out_list */
/*****************************************************************************/
in_olist(int num)
{
int i;
/*
*
* Return ON if num is in the current page range list. Print everything if
* there's no list.
*
*/
if ( nolist == 0 )
return(ON);
for ( i = 0; i < nolist; i += 2 )
if ( num >= olist[i] && num <= olist[i+1] )
return(ON);
return(OFF);
} /* End of in_olist */
/*****************************************************************************/
setencoding(char *name)
{
char path[150];
/*
*
* Include the font encoding file selected by name. It's a full pathname if
* it begins with /, otherwise append suffix ".enc" and look for the file in
* ENCODINGDIR. Missing files are silently ignored.
*
*/
if ( name == NULL )
name = "Default";
if ( *name == '/' )
strcpy(path, name);
else sprintf(path, "%s/%s.enc", ENCODINGDIR, name);
if ( cat(path) == TRUE )
writing = strncmp(name, "UTF", 3) == 0;
} /* End of setencoding */
/*****************************************************************************/
cat(char *file)
{
int fd_in;
int fd_out;
char buf[512];
int count;
/*
*
* Copy *file to stdout. Return FALSE is there was a problem.
*
*/
fflush(stdout);
if ( (fd_in = open(file, O_RDONLY)) == -1 )
return(FALSE);
fd_out = fileno(stdout);
while ( (count = read(fd_in, buf, sizeof(buf))) > 0 )
write(fd_out, buf, count);
close(fd_in);
return(TRUE);
} /* End of cat */
/*****************************************************************************/
str_convert(char **str, int err)
{
int i;
/*
*
* Grab the next integer from **str and return its value or err if *str
* isn't an integer. *str is modified after each digit is read.
*
*/
if ( ! isdigit(**str) )
return(err);
for ( i = 0; isdigit(**str); *str += 1 )
i = 10 * i + **str - '0';
return(i);
} /* End of str_convert */
/*****************************************************************************/
error(int kind, char *mesg, unsigned int a1, unsigned int a2, unsigned int a3)
{
/*
*
* Print an error message and quit if kind is FATAL.
*
*/
if ( mesg != NULL && *mesg != '\0' ) {
fprintf(stderr, "%s: ", prog_name);
fprintf(stderr, mesg, a1, a2, a3);
if ( lineno > 0 )
fprintf(stderr, " (line %d)", lineno);
if ( position > 0 )
fprintf(stderr, " (near byte %d)", position);
putc('\n', stderr);
} /* End if */
if ( kind == FATAL && ignore == OFF ) {
if ( temp_file != NULL )
unlink(temp_file);
exit(x_stat | 01);
} /* End if */
} /* End of error */
/*****************************************************************************/
void interrupt(int sig)
{
/*
*
* Signal handler for translators.
*
*/
if ( temp_file != NULL )
unlink(temp_file);
exit(1);
} /* End of interrupt */
/*****************************************************************************/