+++ /dev/null
-/*
- * Copyright (c) 1993-1994 by Xerox Corporation. All rights reserved.
- *
- * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
- * OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
- *
- * Permission is hereby granted to use or copy this program
- * for any purpose, provided the above notices are retained on all copies.
- * Permission to modify the code and to distribute modified code is granted,
- * provided the above notices are retained, and a notice that the code was
- * modified is included with the above copyright notice.
- */
-/* An sprintf implementation that understands cords. This is probably */
-/* not terribly portable. It assumes an ANSI stdarg.h. It further */
-/* assumes that I can make copies of va_list variables, and read */
-/* arguments repeatedly by applyting va_arg to the copies. This */
-/* could be avoided at some performance cost. */
-/* We also assume that unsigned and signed integers of various kinds */
-/* have the same sizes, and can be cast back and forth. */
-/* We assume that void * and char * have the same size. */
-/* All this cruft is needed because we want to rely on the underlying */
-/* sprintf implementation whenever possible. */
-/* Boehm, September 21, 1995 6:00 pm PDT */
-
-#include "cord.h"
-#include "ec.h"
-#include <stdio.h>
-#include <stdarg.h>
-#include <string.h>
-#include "gc.h"
-
-#define CONV_SPEC_LEN 50 /* Maximum length of a single */
- /* conversion specification. */
-#define CONV_RESULT_LEN 50 /* Maximum length of any */
- /* conversion with default */
- /* width and prec. */
-
-
-static int ec_len(CORD_ec x)
-{
- return(CORD_len(x[0].ec_cord) + (x[0].ec_bufptr - x[0].ec_buf));
-}
-
-/* Possible nonumeric precision values. */
-# define NONE -1
-# define VARIABLE -2
-/* Copy the conversion specification from CORD_pos into the buffer buf */
-/* Return negative on error. */
-/* Source initially points one past the leading %. */
-/* It is left pointing at the conversion type. */
-/* Assign field width and precision to *width and *prec. */
-/* If width or prec is *, VARIABLE is assigned. */
-/* Set *left to 1 if left adjustment flag is present. */
-/* Set *long_arg to 1 if long flag ('l' or 'L') is present, or to */
-/* -1 if 'h' is present. */
-static int extract_conv_spec(CORD_pos source, char *buf,
- int * width, int *prec, int *left, int * long_arg)
-{
- register int result = 0;
- register int current_number = 0;
- register int saw_period = 0;
- register int saw_number;
- register int chars_so_far = 0;
- register char current;
-
- *width = NONE;
- buf[chars_so_far++] = '%';
- while(CORD_pos_valid(source)) {
- if (chars_so_far >= CONV_SPEC_LEN) return(-1);
- current = CORD_pos_fetch(source);
- buf[chars_so_far++] = current;
- switch(current) {
- case '*':
- saw_number = 1;
- current_number = VARIABLE;
- break;
- case '0':
- if (!saw_number) {
- /* Zero fill flag; ignore */
- break;
- } /* otherwise fall through: */
- case '1':
- case '2':
- case '3':
- case '4':
- case '5':
- case '6':
- case '7':
- case '8':
- case '9':
- saw_number = 1;
- current_number *= 10;
- current_number += current - '0';
- break;
- case '.':
- saw_period = 1;
- if(saw_number) {
- *width = current_number;
- saw_number = 0;
- }
- current_number = 0;
- break;
- case 'l':
- case 'L':
- *long_arg = 1;
- current_number = 0;
- break;
- case 'h':
- *long_arg = -1;
- current_number = 0;
- break;
- case ' ':
- case '+':
- case '#':
- current_number = 0;
- break;
- case '-':
- *left = 1;
- current_number = 0;
- break;
- case 'd':
- case 'i':
- case 'o':
- case 'u':
- case 'x':
- case 'X':
- case 'f':
- case 'e':
- case 'E':
- case 'g':
- case 'G':
- case 'c':
- case 'C':
- case 's':
- case 'S':
- case 'p':
- case 'n':
- case 'r':
- goto done;
- default:
- return(-1);
- }
- CORD_next(source);
- }
- return(-1);
- done:
- if (saw_number) {
- if (saw_period) {
- *prec = current_number;
- } else {
- *prec = NONE;
- *width = current_number;
- }
- } else {
- *prec = NONE;
- }
- buf[chars_so_far] = '\0';
- return(result);
-}
-
-int CORD_vsprintf(CORD * out, CORD format, va_list args)
-{
- CORD_ec result;
- register int count;
- register char current;
- CORD_pos pos;
- char conv_spec[CONV_SPEC_LEN + 1];
-
- CORD_ec_init(result);
- for (CORD_set_pos(pos, format, 0); CORD_pos_valid(pos); CORD_next(pos)) {
- current = CORD_pos_fetch(pos);
- if (current == '%') {
- CORD_next(pos);
- if (!CORD_pos_valid(pos)) return(-1);
- current = CORD_pos_fetch(pos);
- if (current == '%') {
- CORD_ec_append(result, current);
- } else {
- int width, prec;
- int left_adj = 0;
- int long_arg = 0;
- CORD arg;
- size_t len;
-
- if (extract_conv_spec(pos, conv_spec,
- &width, &prec,
- &left_adj, &long_arg) < 0) {
- return(-1);
- }
- current = CORD_pos_fetch(pos);
- switch(current) {
- case 'n':
- /* Assign length to next arg */
- if (long_arg == 0) {
- int * pos_ptr;
- pos_ptr = va_arg(args, int *);
- *pos_ptr = ec_len(result);
- } else if (long_arg > 0) {
- long * pos_ptr;
- pos_ptr = va_arg(args, long *);
- *pos_ptr = ec_len(result);
- } else {
- short * pos_ptr;
- pos_ptr = va_arg(args, short *);
- *pos_ptr = ec_len(result);
- }
- goto done;
- case 'r':
- /* Append cord and any padding */
- if (width == VARIABLE) width = va_arg(args, int);
- if (prec == VARIABLE) prec = va_arg(args, int);
- arg = va_arg(args, CORD);
- len = CORD_len(arg);
- if (prec != NONE && len > prec) {
- if (prec < 0) return(-1);
- arg = CORD_substr(arg, 0, prec);
- len = prec;
- }
- if (width != NONE && len < width) {
- char * blanks = GC_MALLOC_ATOMIC(width-len+1);
-
- memset(blanks, ' ', width-len);
- blanks[width-len] = '\0';
- if (left_adj) {
- arg = CORD_cat(arg, blanks);
- } else {
- arg = CORD_cat(blanks, arg);
- }
- }
- CORD_ec_append_cord(result, arg);
- goto done;
- case 'c':
- if (width == NONE && prec == NONE) {
- register char c;
-
- c = va_arg(args, int);
- CORD_ec_append(result, c);
- goto done;
- }
- break;
- case 's':
- if (width == NONE && prec == NONE) {
- char * str = va_arg(args, char *);
- register char c;
-
- while (c = *str++) {
- CORD_ec_append(result, c);
- }
- goto done;
- }
- break;
- default:
- break;
- }
- /* Use standard sprintf to perform conversion */
- {
- register char * buf;
- va_list vsprintf_args = args;
- /* The above does not appear to be sanctioned */
- /* by the ANSI C standard. */
- int max_size = 0;
- int res;
-
- if (width == VARIABLE) width = va_arg(args, int);
- if (prec == VARIABLE) prec = va_arg(args, int);
- if (width != NONE) max_size = width;
- if (prec != NONE && prec > max_size) max_size = prec;
- max_size += CONV_RESULT_LEN;
- if (max_size >= CORD_BUFSZ) {
- buf = GC_MALLOC_ATOMIC(max_size + 1);
- } else {
- if (CORD_BUFSZ - (result[0].ec_bufptr-result[0].ec_buf)
- < max_size) {
- CORD_ec_flush_buf(result);
- }
- buf = result[0].ec_bufptr;
- }
- switch(current) {
- case 'd':
- case 'i':
- case 'o':
- case 'u':
- case 'x':
- case 'X':
- case 'c':
- if (long_arg <= 0) {
- (void) va_arg(args, int);
- } else if (long_arg > 0) {
- (void) va_arg(args, long);
- }
- break;
- case 's':
- case 'p':
- (void) va_arg(args, char *);
- break;
- case 'f':
- case 'e':
- case 'E':
- case 'g':
- case 'G':
- (void) va_arg(args, double);
- break;
- default:
- return(-1);
- }
- res = vsprintf(buf, conv_spec, vsprintf_args);
- len = (size_t)res;
- if ((char *)(GC_word)res == buf) {
- /* old style vsprintf */
- len = strlen(buf);
- } else if (res < 0) {
- return(-1);
- }
- if (buf != result[0].ec_bufptr) {
- register char c;
-
- while (c = *buf++) {
- CORD_ec_append(result, c);
- }
- } else {
- result[0].ec_bufptr = buf + len;
- }
- }
- done:;
- }
- } else {
- CORD_ec_append(result, current);
- }
- }
- count = ec_len(result);
- *out = CORD_balance(CORD_ec_to_cord(result));
- return(count);
-}
-
-int CORD_sprintf(CORD * out, CORD format, ...)
-{
- va_list args;
- int result;
-
- va_start(args, format);
- result = CORD_vsprintf(out, format, args);
- va_end(args);
- return(result);
-}
-
-int CORD_fprintf(FILE * f, CORD format, ...)
-{
- va_list args;
- int result;
- CORD out;
-
- va_start(args, format);
- result = CORD_vsprintf(&out, format, args);
- va_end(args);
- if (result > 0) CORD_put(out, f);
- return(result);
-}
-
-int CORD_vfprintf(FILE * f, CORD format, va_list args)
-{
- int result;
- CORD out;
-
- result = CORD_vsprintf(&out, format, args);
- if (result > 0) CORD_put(out, f);
- return(result);
-}
-
-int CORD_printf(CORD format, ...)
-{
- va_list args;
- int result;
- CORD out;
-
- va_start(args, format);
- result = CORD_vsprintf(&out, format, args);
- va_end(args);
- if (result > 0) CORD_put(out, stdout);
- return(result);
-}
-
-int CORD_vprintf(CORD format, va_list args)
-{
- int result;
- CORD out;
-
- result = CORD_vsprintf(&out, format, args);
- if (result > 0) CORD_put(out, stdout);
- return(result);
-}
projects / msp430-gcc.git / blobdiff