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[binutils/dougsmingw.git] / libiberty / _doprnt.c
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1 /* Provide a version of _doprnt in terms of fprintf.
2 Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
3 Contributed by Kaveh Ghazi (ghazi@caip.rutgers.edu) 3/29/98
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.
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.
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, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
19 #include "config.h"
20 #include "ansidecl.h"
21 #include "safe-ctype.h"
23 #include <stdio.h>
24 #include <stdarg.h>
25 #ifdef HAVE_STRING_H
26 #include <string.h>
27 #endif
28 #ifdef HAVE_STDLIB_H
29 #include <stdlib.h>
30 #endif
32 #undef _doprnt
34 #ifdef HAVE__DOPRNT
35 #define TEST
36 #endif
38 #ifdef TEST /* Make sure to use the internal one. */
39 #define _doprnt my_doprnt
40 #endif
42 #define COPY_VA_INT \
43 do { \
44 const int value = abs (va_arg (ap, int)); \
45 char buf[32]; \
46 ptr++; /* Go past the asterisk. */ \
47 *sptr = '\0'; /* NULL terminate sptr. */ \
48 sprintf(buf, "%d", value); \
49 strcat(sptr, buf); \
50 while (*sptr) sptr++; \
51 } while (0)
53 #define PRINT_CHAR(CHAR) \
54 do { \
55 putc(CHAR, stream); \
56 ptr++; \
57 total_printed++; \
58 continue; \
59 } while (0)
61 #define PRINT_TYPE(TYPE) \
62 do { \
63 int result; \
64 TYPE value = va_arg (ap, TYPE); \
65 *sptr++ = *ptr++; /* Copy the type specifier. */ \
66 *sptr = '\0'; /* NULL terminate sptr. */ \
67 result = fprintf(stream, specifier, value); \
68 if (result == -1) \
69 return -1; \
70 else \
71 { \
72 total_printed += result; \
73 continue; \
74 } \
75 } while (0)
77 int
78 _doprnt (const char *format, va_list ap, FILE *stream)
80 const char * ptr = format;
81 char specifier[128];
82 int total_printed = 0;
84 while (*ptr != '\0')
86 if (*ptr != '%') /* While we have regular characters, print them. */
87 PRINT_CHAR(*ptr);
88 else /* We got a format specifier! */
90 char * sptr = specifier;
91 int wide_width = 0, short_width = 0;
93 *sptr++ = *ptr++; /* Copy the % and move forward. */
95 while (strchr ("-+ #0", *ptr)) /* Move past flags. */
96 *sptr++ = *ptr++;
98 if (*ptr == '*')
99 COPY_VA_INT;
100 else
101 while (ISDIGIT(*ptr)) /* Handle explicit numeric value. */
102 *sptr++ = *ptr++;
104 if (*ptr == '.')
106 *sptr++ = *ptr++; /* Copy and go past the period. */
107 if (*ptr == '*')
108 COPY_VA_INT;
109 else
110 while (ISDIGIT(*ptr)) /* Handle explicit numeric value. */
111 *sptr++ = *ptr++;
113 while (strchr ("hlL", *ptr))
115 switch (*ptr)
117 case 'h':
118 short_width = 1;
119 break;
120 case 'l':
121 wide_width++;
122 break;
123 case 'L':
124 wide_width = 2;
125 break;
126 default:
127 abort();
129 *sptr++ = *ptr++;
132 switch (*ptr)
134 case 'd':
135 case 'i':
136 case 'o':
137 case 'u':
138 case 'x':
139 case 'X':
140 case 'c':
142 /* Short values are promoted to int, so just copy it
143 as an int and trust the C library printf to cast it
144 to the right width. */
145 if (short_width)
146 PRINT_TYPE(int);
147 else
149 switch (wide_width)
151 case 0:
152 PRINT_TYPE(int);
153 break;
154 case 1:
155 PRINT_TYPE(long);
156 break;
157 case 2:
158 default:
159 #if defined(__GNUC__) || defined(HAVE_LONG_LONG)
160 PRINT_TYPE(long long);
161 #else
162 PRINT_TYPE(long); /* Fake it and hope for the best. */
163 #endif
164 break;
165 } /* End of switch (wide_width) */
166 } /* End of else statement */
167 } /* End of integer case */
168 break;
169 case 'f':
170 case 'e':
171 case 'E':
172 case 'g':
173 case 'G':
175 if (wide_width == 0)
176 PRINT_TYPE(double);
177 else
179 #if defined(__GNUC__) || defined(HAVE_LONG_DOUBLE)
180 PRINT_TYPE(long double);
181 #else
182 PRINT_TYPE(double); /* Fake it and hope for the best. */
183 #endif
186 break;
187 case 's':
188 PRINT_TYPE(char *);
189 break;
190 case 'p':
191 PRINT_TYPE(void *);
192 break;
193 case '%':
194 PRINT_CHAR('%');
195 break;
196 default:
197 abort();
198 } /* End of switch (*ptr) */
199 } /* End of else statement */
202 return total_printed;
205 #ifdef TEST
207 #include <math.h>
208 #ifndef M_PI
209 #define M_PI (3.1415926535897932385)
210 #endif
212 #define RESULT(x) do \
214 int i = (x); \
215 printf ("printed %d characters\n", i); \
216 fflush(stdin); \
217 } while (0)
219 static int checkit (const char * format, ...) ATTRIBUTE_PRINTF_1;
221 static int
222 checkit (const char* format, ...)
224 int result;
225 VA_OPEN (args, format);
226 VA_FIXEDARG (args, char *, format);
228 result = _doprnt (format, args, stdout);
229 VA_CLOSE (args);
231 return result;
235 main (void)
237 RESULT(checkit ("<%d>\n", 0x12345678));
238 RESULT(printf ("<%d>\n", 0x12345678));
240 RESULT(checkit ("<%200d>\n", 5));
241 RESULT(printf ("<%200d>\n", 5));
243 RESULT(checkit ("<%.300d>\n", 6));
244 RESULT(printf ("<%.300d>\n", 6));
246 RESULT(checkit ("<%100.150d>\n", 7));
247 RESULT(printf ("<%100.150d>\n", 7));
249 RESULT(checkit ("<%s>\n",
250 "jjjjjjjjjiiiiiiiiiiiiiiioooooooooooooooooppppppppppppaa\n\
251 777777777777777777333333333333366666666666622222222222777777777777733333"));
252 RESULT(printf ("<%s>\n",
253 "jjjjjjjjjiiiiiiiiiiiiiiioooooooooooooooooppppppppppppaa\n\
254 777777777777777777333333333333366666666666622222222222777777777777733333"));
256 RESULT(checkit ("<%f><%0+#f>%s%d%s>\n",
257 1.0, 1.0, "foo", 77, "asdjffffffffffffffiiiiiiiiiiixxxxx"));
258 RESULT(printf ("<%f><%0+#f>%s%d%s>\n",
259 1.0, 1.0, "foo", 77, "asdjffffffffffffffiiiiiiiiiiixxxxx"));
261 RESULT(checkit ("<%4f><%.4f><%%><%4.4f>\n", M_PI, M_PI, M_PI));
262 RESULT(printf ("<%4f><%.4f><%%><%4.4f>\n", M_PI, M_PI, M_PI));
264 RESULT(checkit ("<%*f><%.*f><%%><%*.*f>\n", 3, M_PI, 3, M_PI, 3, 3, M_PI));
265 RESULT(printf ("<%*f><%.*f><%%><%*.*f>\n", 3, M_PI, 3, M_PI, 3, 3, M_PI));
267 RESULT(checkit ("<%d><%i><%o><%u><%x><%X><%c>\n",
268 75, 75, 75, 75, 75, 75, 75));
269 RESULT(printf ("<%d><%i><%o><%u><%x><%X><%c>\n",
270 75, 75, 75, 75, 75, 75, 75));
272 RESULT(checkit ("<%d><%i><%o><%u><%x><%X><%c>\n",
273 75, 75, 75, 75, 75, 75, 75));
274 RESULT(printf ("<%d><%i><%o><%u><%x><%X><%c>\n",
275 75, 75, 75, 75, 75, 75, 75));
277 RESULT(checkit ("Testing (hd) short: <%d><%ld><%hd><%hd><%d>\n", 123, (long)234, 345, 123456789, 456));
278 RESULT(printf ("Testing (hd) short: <%d><%ld><%hd><%hd><%d>\n", 123, (long)234, 345, 123456789, 456));
280 #if defined(__GNUC__) || defined (HAVE_LONG_LONG)
281 RESULT(checkit ("Testing (lld) long long: <%d><%lld><%d>\n", 123, 234234234234234234LL, 345));
282 RESULT(printf ("Testing (lld) long long: <%d><%lld><%d>\n", 123, 234234234234234234LL, 345));
283 RESULT(checkit ("Testing (Ld) long long: <%d><%Ld><%d>\n", 123, 234234234234234234LL, 345));
284 RESULT(printf ("Testing (Ld) long long: <%d><%Ld><%d>\n", 123, 234234234234234234LL, 345));
285 #endif
287 #if defined(__GNUC__) || defined (HAVE_LONG_DOUBLE)
288 RESULT(checkit ("Testing (Lf) long double: <%.20f><%.20Lf><%0+#.20f>\n",
289 1.23456, 1.234567890123456789L, 1.23456));
290 RESULT(printf ("Testing (Lf) long double: <%.20f><%.20Lf><%0+#.20f>\n",
291 1.23456, 1.234567890123456789L, 1.23456));
292 #endif
294 return 0;
296 #endif /* TEST */