89 lines
1.7 KiB
C
89 lines
1.7 KiB
C
/* $Revision: 1.12 $
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*/
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#include "unroff.h"
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static char *progname = "(whoami?)";
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void set_progname(char *s) {
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char *p;
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progname = (p = strrchr(s, '/')) ? p+1 : s;
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}
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char *get_progname(void) {
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return progname;
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}
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void warn(char *fmt, ...) {
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va_list args;
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fprintf(stderr, "%s: ", progname);
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if (istream_is_open())
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fprintf(stderr, "%s:%lu: ", curr_istream_target(), curr_istream_lno());
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fprintf(stderr, "warning: ");
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va_start(args, fmt);
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vfprintf(stderr, fmt, args);
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fprintf(stderr, ".\n");
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}
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void fatal_error(char *fmt, ...) {
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va_list args;
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fprintf(stderr, "%s: ", progname);
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va_start(args, fmt);
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vfprintf(stderr, fmt, args);
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fprintf(stderr, ".\n");
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exit(1);
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}
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static const char *strerr(void) {
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return errno > 0 && errno < sys_nerr ?
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sys_errlist[errno] : "unknown error";
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}
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void read_error(char *s) {
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fatal_error("reading %s: %s", s, strerr());
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}
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void write_error(char *s) {
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fatal_error("writing %s: %s", s, strerr());
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}
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void open_error(char *fn) {
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fatal_error("%s: %s", fn, strerr());
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}
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char *printable_string(char *s, int len) {
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static Buffer *bp;
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char c[4];
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if (!bp)
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bp = buffer_new(0);
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buffer_clear(bp);
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for ( ; len > 0; len--, s++) {
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if (isprint(UCHAR(*s)) || *s == ' ') {
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buffer_putc(bp, *s);
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} else {
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buffer_putc(bp, '\\');
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switch (*s) {
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case '\n':
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buffer_putc(bp, 'n'); break;
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case '\t':
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buffer_putc(bp, 't'); break;
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case '\b':
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buffer_putc(bp, 'b'); break;
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default:
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sprintf(c, "%03o", *s);
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buffer_puts(bp, c, 3);
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}
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}
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}
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buffer_putc(bp, '\0');
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return bp->data;
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}
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char *printable_char(char c) {
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return printable_string(&c, 1);
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}
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