[thirdparty/gcc.git] / libiberty / _doprnt.c

/* Provide a version of _doprnt in terms of fprintf.
   Copyright (C) 1998, 1999, 2000, 2001, 2002   Free Software Foundation, Inc.
   Contributed by Kaveh Ghazi  (ghazi@caip.rutgers.edu)  3/29/98

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, 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

#include "config.h"
#include "ansidecl.h"
#include "safe-ctype.h"

#include <stdio.h>
#ifdef ANSI_PROTOTYPES
#include <stdarg.h>
#else
#include <varargs.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif

#undef _doprnt

#ifdef HAVE__DOPRNT
#define TEST
#endif

#ifdef TEST /* Make sure to use the internal one.  */
#define _doprnt my_doprnt
#endif

#define COPY_VA_INT \
  do { \
	 const int value = abs (va_arg (ap, int)); \
	 char buf[32]; \
	 ptr++; /* Go past the asterisk.  */ \
	 *sptr = '\0'; /* NULL terminate sptr.  */ \
	 sprintf(buf, "%d", value); \
	 strcat(sptr, buf); \
	 while (*sptr) sptr++; \
     } while (0)

#define PRINT_CHAR(CHAR) \
  do { \
	 putc(CHAR, stream); \
	 ptr++; \
	 total_printed++; \
	 continue; \
     } while (0)

#define PRINT_TYPE(TYPE) \
  do { \
	int result; \
	TYPE value = va_arg (ap, TYPE); \
	*sptr++ = *ptr++; /* Copy the type specifier.  */ \
	*sptr = '\0'; /* NULL terminate sptr.  */ \
	result = fprintf(stream, specifier, value); \
	if (result == -1) \
	  return -1; \
	else \
	  { \
	    total_printed += result; \
	    continue; \
	  } \
      } while (0)

int
_doprnt (format, ap, stream)
  const char * format;
  va_list ap;
  FILE * stream;
{
  const char * ptr = format;
  char specifier[128];
  int total_printed = 0;
  
  while (*ptr != '\0')
    {
      if (*ptr != '%') /* While we have regular characters, print them.  */
	PRINT_CHAR(*ptr);
      else /* We got a format specifier! */
	{
	  char * sptr = specifier;
	  int wide_width = 0, short_width = 0;
	  
	  *sptr++ = *ptr++; /* Copy the % and move forward.  */

	  while (strchr ("-+ #0", *ptr)) /* Move past flags.  */
	    *sptr++ = *ptr++;

	  if (*ptr == '*')
	    COPY_VA_INT;
	  else
	    while (ISDIGIT(*ptr)) /* Handle explicit numeric value.  */
	      *sptr++ = *ptr++;
	  
	  if (*ptr == '.')
	    {
	      *sptr++ = *ptr++; /* Copy and go past the period.  */
	      if (*ptr == '*')
		COPY_VA_INT;
	      else
		while (ISDIGIT(*ptr)) /* Handle explicit numeric value.  */
		  *sptr++ = *ptr++;
	    }
	  while (strchr ("hlL", *ptr))
	    {
	      switch (*ptr)
		{
		case 'h':
		  short_width = 1;
		  break;
		case 'l':
		  wide_width++;
		  break;
		case 'L':
		  wide_width = 2;
		  break;
		default:
		  abort();
		}
	      *sptr++ = *ptr++;
	    }

	  switch (*ptr)
	    {
	    case 'd':
	    case 'i':
	    case 'o':
	    case 'u':
	    case 'x':
	    case 'X':
	    case 'c':
	      {
		/* Short values are promoted to int, so just copy it
                   as an int and trust the C library printf to cast it
                   to the right width.  */
		if (short_width)
		  PRINT_TYPE(int);
		else
		  {
		    switch (wide_width)
		      {
		      case 0:
			PRINT_TYPE(int);
			break;
		      case 1:
			PRINT_TYPE(long);
			break;
		      case 2:
		      default:
#if defined(__GNUC__) || defined(HAVE_LONG_LONG)
			PRINT_TYPE(long long);
#else
			PRINT_TYPE(long); /* Fake it and hope for the best.  */
#endif
			break;
		      } /* End of switch (wide_width) */
		  } /* End of else statement */
	      } /* End of integer case */
	      break;
	    case 'f':
	    case 'e':
	    case 'E':
	    case 'g':
	    case 'G':
	      {
		if (wide_width == 0)
		  PRINT_TYPE(double);
		else
		  {
#if defined(__GNUC__) || defined(HAVE_LONG_DOUBLE)
		    PRINT_TYPE(long double);
#else
		    PRINT_TYPE(double); /* Fake it and hope for the best.  */
#endif
		  }
	      }
	      break;
	    case 's':
	      PRINT_TYPE(char *);
	      break;
	    case 'p':
	      PRINT_TYPE(void *);
	      break;
	    case '%':
	      PRINT_CHAR('%');
	      break;
	    default:
	      abort();
	    } /* End of switch (*ptr) */
	} /* End of else statement */
    }

  return total_printed;
}

#ifdef TEST

#include <math.h>
#ifndef M_PI
#define M_PI (3.1415926535897932385)
#endif

#define RESULT(x) do \
{ \
    int i = (x); \
    printf ("printed %d characters\n", i); \
    fflush(stdin); \
} while (0)

static int checkit PARAMS ((const char * format, ...)) ATTRIBUTE_PRINTF_1;

static int
checkit VPARAMS ((const char* format, ...))
{
  int result;
  VA_OPEN (args, format);
  VA_FIXEDARG (args, char *, format);

  result = _doprnt (format, args, stdout);
  VA_CLOSE (args);

  return result;
}

int
main ()
{
  RESULT(checkit ("<%d>\n", 0x12345678));
  RESULT(printf ("<%d>\n", 0x12345678));

  RESULT(checkit ("<%200d>\n", 5));
  RESULT(printf ("<%200d>\n", 5));

  RESULT(checkit ("<%.300d>\n", 6));
  RESULT(printf ("<%.300d>\n", 6));

  RESULT(checkit ("<%100.150d>\n", 7));
  RESULT(printf ("<%100.150d>\n", 7));

  RESULT(checkit ("<%s>\n",
		  "jjjjjjjjjiiiiiiiiiiiiiiioooooooooooooooooppppppppppppaa\n\
777777777777777777333333333333366666666666622222222222777777777777733333"));
  RESULT(printf ("<%s>\n",
		 "jjjjjjjjjiiiiiiiiiiiiiiioooooooooooooooooppppppppppppaa\n\
777777777777777777333333333333366666666666622222222222777777777777733333"));

  RESULT(checkit ("<%f><%0+#f>%s%d%s>\n",
		  1.0, 1.0, "foo", 77, "asdjffffffffffffffiiiiiiiiiiixxxxx"));
  RESULT(printf ("<%f><%0+#f>%s%d%s>\n",
		 1.0, 1.0, "foo", 77, "asdjffffffffffffffiiiiiiiiiiixxxxx"));

  RESULT(checkit ("<%4f><%.4f><%%><%4.4f>\n", M_PI, M_PI, M_PI));
  RESULT(printf ("<%4f><%.4f><%%><%4.4f>\n", M_PI, M_PI, M_PI));

  RESULT(checkit ("<%*f><%.*f><%%><%*.*f>\n", 3, M_PI, 3, M_PI, 3, 3, M_PI));
  RESULT(printf ("<%*f><%.*f><%%><%*.*f>\n", 3, M_PI, 3, M_PI, 3, 3, M_PI));

  RESULT(checkit ("<%d><%i><%o><%u><%x><%X><%c>\n",
		  75, 75, 75, 75, 75, 75, 75));
  RESULT(printf ("<%d><%i><%o><%u><%x><%X><%c>\n",
		 75, 75, 75, 75, 75, 75, 75));

  RESULT(checkit ("<%d><%i><%o><%u><%x><%X><%c>\n",
		  75, 75, 75, 75, 75, 75, 75));
  RESULT(printf ("<%d><%i><%o><%u><%x><%X><%c>\n",
		 75, 75, 75, 75, 75, 75, 75));

  RESULT(checkit ("Testing (hd) short: <%d><%ld><%hd><%hd><%d>\n", 123, (long)234, 345, 123456789, 456));
  RESULT(printf ("Testing (hd) short: <%d><%ld><%hd><%hd><%d>\n", 123, (long)234, 345, 123456789, 456));

#if defined(__GNUC__) || defined (HAVE_LONG_LONG)
  RESULT(checkit ("Testing (lld) long long: <%d><%lld><%d>\n", 123, 234234234234234234LL, 345));
  RESULT(printf ("Testing (lld) long long: <%d><%lld><%d>\n", 123, 234234234234234234LL, 345));
  RESULT(checkit ("Testing (Ld) long long: <%d><%Ld><%d>\n", 123, 234234234234234234LL, 345));
  RESULT(printf ("Testing (Ld) long long: <%d><%Ld><%d>\n", 123, 234234234234234234LL, 345));
#endif

#if defined(__GNUC__) || defined (HAVE_LONG_DOUBLE)
  RESULT(checkit ("Testing (Lf) long double: <%.20f><%.20Lf><%0+#.20f>\n",
		  1.23456, 1.234567890123456789L, 1.23456));
  RESULT(printf ("Testing (Lf) long double: <%.20f><%.20Lf><%0+#.20f>\n",
		 1.23456, 1.234567890123456789L, 1.23456));
#endif

  return 0;
}
#endif /* TEST */
Commit	Line	Data
e490616e	1	/* Provide a version of _doprnt in terms of fprintf.
9ce3f7e5	2	Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
e490616e ZW	3	Contributed by Kaveh Ghazi (ghazi@caip.rutgers.edu) 3/29/98
	4
	5	This program is free software; you can redistribute it and/or modify it
	6	under the terms of the GNU General Public License as published by the
	7	Free Software Foundation; either version 2, or (at your option) any
	8	later version.
	9
	10	This program is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	GNU General Public License for more details.
	14
	15	You should have received a copy of the GNU General Public License
	16	along with this program; if not, write to the Free Software
	17	Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
	18
	19	#include "config.h"
	20	#include "ansidecl.h"
	21	#include "safe-ctype.h"
	22
	23	#include <stdio.h>
	24	#ifdef ANSI_PROTOTYPES
	25	#include <stdarg.h>
	26	#else
	27	#include <varargs.h>
	28	#endif
	29	#ifdef HAVE_STRING_H
	30	#include <string.h>
	31	#endif
9ce3f7e5 DD	32	#ifdef HAVE_STDLIB_H
	33	#include <stdlib.h>
	34	#endif
e490616e ZW	35
	36	#undef _doprnt
	37
9ce3f7e5 DD	38	#ifdef HAVE__DOPRNT
	39	#define TEST
	40	#endif
	41
e490616e ZW	42	#ifdef TEST /* Make sure to use the internal one. */
	43	#define _doprnt my_doprnt
	44	#endif
	45
	46	#define COPY_VA_INT \
	47	do { \
	48	const int value = abs (va_arg (ap, int)); \
	49	char buf[32]; \
	50	ptr++; /* Go past the asterisk. */ \
	51	sptr = '\0'; / NULL terminate sptr. */ \
	52	sprintf(buf, "%d", value); \
	53	strcat(sptr, buf); \
	54	while (*sptr) sptr++; \
	55	} while (0)
	56
	57	#define PRINT_CHAR(CHAR) \
	58	do { \
	59	putc(CHAR, stream); \
	60	ptr++; \
	61	total_printed++; \
	62	continue; \
	63	} while (0)
	64
	65	#define PRINT_TYPE(TYPE) \
	66	do { \
	67	int result; \
	68	TYPE value = va_arg (ap, TYPE); \
	69	sptr++ = ptr++; /* Copy the type specifier. */ \
	70	sptr = '\0'; / NULL terminate sptr. */ \
	71	result = fprintf(stream, specifier, value); \
	72	if (result == -1) \
	73	return -1; \
	74	else \
	75	{ \
	76	total_printed += result; \
	77	continue; \
	78	} \
	79	} while (0)
	80
	81	int
	82	_doprnt (format, ap, stream)
	83	const char * format;
	84	va_list ap;
	85	FILE * stream;
	86	{
	87	const char * ptr = format;
	88	char specifier[128];
	89	int total_printed = 0;
	90
	91	while (*ptr != '\0')
	92	{
	93	if (ptr != '%') / While we have regular characters, print them. */
	94	PRINT_CHAR(*ptr);
	95	else /* We got a format specifier! */
	96	{
	97	char * sptr = specifier;
	98	int wide_width = 0, short_width = 0;
	99
	100	sptr++ = ptr++; /* Copy the % and move forward. */
	101
	102	while (strchr ("-+ #0", ptr)) / Move past flags. */
	103	sptr++ = ptr++;
	104
	105	if (ptr == '')
106	COPY_VA_INT;
107	else
108	while (ISDIGIT(ptr)) / Handle explicit numeric value. */
109	sptr++ = ptr++;
110
111	if (*ptr == '.')
112	{
113	sptr++ = ptr++; /* Copy and go past the period. */
114	if (ptr == '')
115	COPY_VA_INT;
116	else
117	while (ISDIGIT(ptr)) / Handle explicit numeric value. */
118	sptr++ = ptr++;
119	}
120	while (strchr ("hlL", *ptr))
121	{
122	switch (*ptr)
123	{
124	case 'h':
125	short_width = 1;
126	break;
127	case 'l':
128	wide_width++;
129	break;
130	case 'L':
131	wide_width = 2;
132	break;
133	default:
134	abort();
135	}
136	sptr++ = ptr++;
137	}
138
139	switch (*ptr)
140	{
141	case 'd':
142	case 'i':
143	case 'o':
144	case 'u':
145	case 'x':
146	case 'X':
147	case 'c':
148	{
149	/* Short values are promoted to int, so just copy it
150	as an int and trust the C library printf to cast it
151	to the right width. */
152	if (short_width)
153	PRINT_TYPE(int);
154	else
155	{
156	switch (wide_width)
157	{
158	case 0:
159	PRINT_TYPE(int);
160	break;
161	case 1:
162	PRINT_TYPE(long);
163	break;
164	case 2:
165	default:
166	#if defined(__GNUC__) \|\| defined(HAVE_LONG_LONG)
167	PRINT_TYPE(long long);
168	#else
169	PRINT_TYPE(long); /* Fake it and hope for the best. */
170	#endif
171	break;
172	} /* End of switch (wide_width) */
173	} /* End of else statement */
174	} /* End of integer case */
175	break;
176	case 'f':
177	case 'e':
178	case 'E':
179	case 'g':
180	case 'G':
181	{
182	if (wide_width == 0)
183	PRINT_TYPE(double);
184	else
185	{
186	#if defined(__GNUC__) \|\| defined(HAVE_LONG_DOUBLE)
187	PRINT_TYPE(long double);
188	#else
189	PRINT_TYPE(double); /* Fake it and hope for the best. */
190	#endif
191	}
192	}
193	break;
194	case 's':
195	PRINT_TYPE(char *);
196	break;
197	case 'p':
198	PRINT_TYPE(void *);
199	break;
200	case '%':
201	PRINT_CHAR('%');
202	break;
203	default:
204	abort();
205	} /* End of switch (ptr) /
206	} /* End of else statement */
207	}
208
209	return total_printed;
210	}
211
212	#ifdef TEST
213
214	#include <math.h>
215	#ifndef M_PI
216	#define M_PI (3.1415926535897932385)
217	#endif
218
219	#define RESULT(x) do \
220	{ \
221	int i = (x); \
222	printf ("printed %d characters\n", i); \
223	fflush(stdin); \
224	} while (0)
225
226	static int checkit PARAMS ((const char * format, ...)) ATTRIBUTE_PRINTF_1;
227
228	static int
229	checkit VPARAMS ((const char* format, ...))
230	{
231	int result;
232	VA_OPEN (args, format);
233	VA_FIXEDARG (args, char *, format);
234
235	result = _doprnt (format, args, stdout);
236	VA_CLOSE (args);
237
238	return result;
239	}
240
241	int
242	main ()
243	{
244	RESULT(checkit ("<%d>\n", 0x12345678));
245	RESULT(printf ("<%d>\n", 0x12345678));
246
247	RESULT(checkit ("<%200d>\n", 5));
248	RESULT(printf ("<%200d>\n", 5));
249
250	RESULT(checkit ("<%.300d>\n", 6));
251	RESULT(printf ("<%.300d>\n", 6));
252
253	RESULT(checkit ("<%100.150d>\n", 7));
254	RESULT(printf ("<%100.150d>\n", 7));
255
256	RESULT(checkit ("<%s>\n",
257	"jjjjjjjjjiiiiiiiiiiiiiiioooooooooooooooooppppppppppppaa\n\
258	777777777777777777333333333333366666666666622222222222777777777777733333"));
259	RESULT(printf ("<%s>\n",
260	"jjjjjjjjjiiiiiiiiiiiiiiioooooooooooooooooppppppppppppaa\n\
261	777777777777777777333333333333366666666666622222222222777777777777733333"));
262
263	RESULT(checkit ("<%f><%0+#f>%s%d%s>\n",
264	1.0, 1.0, "foo", 77, "asdjffffffffffffffiiiiiiiiiiixxxxx"));
265	RESULT(printf ("<%f><%0+#f>%s%d%s>\n",
266	1.0, 1.0, "foo", 77, "asdjffffffffffffffiiiiiiiiiiixxxxx"));
267
268	RESULT(checkit ("<%4f><%.4f><%%><%4.4f>\n", M_PI, M_PI, M_PI));
269	RESULT(printf ("<%4f><%.4f><%%><%4.4f>\n", M_PI, M_PI, M_PI));
270
271	RESULT(checkit ("<%f><%.f><%%><%.f>\n", 3, M_PI, 3, M_PI, 3, 3, M_PI));
272	RESULT(printf ("<%f><%.f><%%><%.f>\n", 3, M_PI, 3, M_PI, 3, 3, M_PI));
273
274	RESULT(checkit ("<%d><%i><%o><%u><%x><%X><%c>\n",
275	75, 75, 75, 75, 75, 75, 75));
276	RESULT(printf ("<%d><%i><%o><%u><%x><%X><%c>\n",
277	75, 75, 75, 75, 75, 75, 75));
278
279	RESULT(checkit ("<%d><%i><%o><%u><%x><%X><%c>\n",
280	75, 75, 75, 75, 75, 75, 75));
281	RESULT(printf ("<%d><%i><%o><%u><%x><%X><%c>\n",
282	75, 75, 75, 75, 75, 75, 75));
283
284	RESULT(checkit ("Testing (hd) short: <%d><%ld><%hd><%hd><%d>\n", 123, (long)234, 345, 123456789, 456));
285	RESULT(printf ("Testing (hd) short: <%d><%ld><%hd><%hd><%d>\n", 123, (long)234, 345, 123456789, 456));
286
287	#if defined(__GNUC__) \|\| defined (HAVE_LONG_LONG)
288	RESULT(checkit ("Testing (lld) long long: <%d><%lld><%d>\n", 123, 234234234234234234LL, 345));
289	RESULT(printf ("Testing (lld) long long: <%d><%lld><%d>\n", 123, 234234234234234234LL, 345));
290	RESULT(checkit ("Testing (Ld) long long: <%d><%Ld><%d>\n", 123, 234234234234234234LL, 345));
291	RESULT(printf ("Testing (Ld) long long: <%d><%Ld><%d>\n", 123, 234234234234234234LL, 345));
292	#endif
293
294	#if defined(__GNUC__) \|\| defined (HAVE_LONG_DOUBLE)
295	RESULT(checkit ("Testing (Lf) long double: <%.20f><%.20Lf><%0+#.20f>\n",
296	1.23456, 1.234567890123456789L, 1.23456));
297	RESULT(printf ("Testing (Lf) long double: <%.20f><%.20Lf><%0+#.20f>\n",
298	1.23456, 1.234567890123456789L, 1.23456));
299	#endif
300
301	return 0;
302	}
303	#endif /* TEST */