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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [boehm-gc/] [cord/] [cordprnt.c] - Blame information for rev 721

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/*
 * 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 = 0;
    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 = (char)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;
                    int max_size = 0;
                    int res;
#                   ifdef __va_copy
                      __va_copy(vsprintf_args, args);
#                   else
#                     if defined(__GNUC__) && !defined(__DJGPP__) /* and probably in other cases */
                        va_copy(vsprintf_args, args);
#                     else
                        vsprintf_args = args;
#                     endif
#                   endif
                    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);
}

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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [boehm-gc/] [cord/] [cordprnt.c] - Blame information for rev 721

Line No.	Rev	Author	Line
1	721	jeremybenn	`/*`
2			`* Copyright (c) 1993-1994 by Xerox Corporation. All rights reserved.`
3			`*`
4			`* THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED`
5			`* OR IMPLIED. ANY USE IS AT YOUR OWN RISK.`
6			`*`
7			`* Permission is hereby granted to use or copy this program`
8			`* for any purpose, provided the above notices are retained on all copies.`
9			`* Permission to modify the code and to distribute modified code is granted,`
10			`* provided the above notices are retained, and a notice that the code was`
11			`* modified is included with the above copyright notice.`
12			`*/`
13			`/* An sprintf implementation that understands cords. This is probably */`
14			`/* not terribly portable. It assumes an ANSI stdarg.h. It further */`
15			`/* assumes that I can make copies of va_list variables, and read */`
16			`/* arguments repeatedly by applyting va_arg to the copies. This */`
17			`/* could be avoided at some performance cost. */`
18			`/* We also assume that unsigned and signed integers of various kinds */`
19			`/* have the same sizes, and can be cast back and forth. */`
20			`/* We assume that void * and char * have the same size. */`
21			`/* All this cruft is needed because we want to rely on the underlying */`
22			`/* sprintf implementation whenever possible. */`
23			`/* Boehm, September 21, 1995 6:00 pm PDT */`
24
25			`#include "cord.h"`
26			`#include "ec.h"`
27			`#include <stdio.h>`
28			`#include <stdarg.h>`
29			`#include <string.h>`
30			`#include "gc.h"`
31
32			`#define CONV_SPEC_LEN 50 /* Maximum length of a single */`
33			`/* conversion specification. */`
34			`#define CONV_RESULT_LEN 50 /* Maximum length of any */`
35			`/* conversion with default */`
36			`/* width and prec. */`
37
38
39			`static int ec_len(CORD_ec x)`
40			`{`
41			`return(CORD_len(x[0].ec_cord) + (x[0].ec_bufptr - x[0].ec_buf));`
42			`}`
43
44			`/* Possible nonumeric precision values. */`
45			`# define NONE -1`
46			`# define VARIABLE -2`
47			`/* Copy the conversion specification from CORD_pos into the buffer buf */`
48			`/* Return negative on error. */`
49			`/* Source initially points one past the leading %. */`
50			`/* It is left pointing at the conversion type. */`
51			`/* Assign field width and precision to width and prec. */`
52			`/* If width or prec is , VARIABLE is assigned. /`
53			`/* Set left to 1 if left adjustment flag is present. /`
54			`/* Set long_arg to 1 if long flag ('l' or 'L') is present, or to /`
55			`/* -1 if 'h' is present. */`
56			`static int extract_conv_spec(CORD_pos source, char *buf,`
57			`int * width, int prec, int left, int * long_arg)`
58			`{`
59			`register int result = 0;`
60			`register int current_number = 0;`
61			`register int saw_period = 0;`
62			`register int saw_number = 0;`
63			`register int chars_so_far = 0;`
64			`register char current;`
65
66			`*width = NONE;`
67			`buf[chars_so_far++] = '%';`
68			`while(CORD_pos_valid(source)) {`
69			`if (chars_so_far >= CONV_SPEC_LEN) return(-1);`
70			`current = CORD_pos_fetch(source);`
71			`buf[chars_so_far++] = current;`
72			`switch(current) {`
73			`case '*':`
74			`saw_number = 1;`
75			`current_number = VARIABLE;`
76			`break;`
77			`case '0':`
78			`if (!saw_number) {`
79			`/* Zero fill flag; ignore */`
80			`break;`
81			`} /* otherwise fall through: */`
82			`case '1':`
83			`case '2':`
84			`case '3':`
85			`case '4':`
86			`case '5':`
87			`case '6':`
88			`case '7':`
89			`case '8':`
90			`case '9':`
91			`saw_number = 1;`
92			`current_number *= 10;`
93			`current_number += current - '0';`
94			`break;`
95			`case '.':`
96			`saw_period = 1;`
97			`if(saw_number) {`
98			`*width = current_number;`
99			`saw_number = 0;`
100			`}`
101			`current_number = 0;`
102			`break;`
103			`case 'l':`
104			`case 'L':`
105			`*long_arg = 1;`
106			`current_number = 0;`
107			`break;`
108			`case 'h':`
109			`*long_arg = -1;`
110			`current_number = 0;`
111			`break;`
112			`case ' ':`
113			`case '+':`
114			`case '#':`
115			`current_number = 0;`
116			`break;`
117			`case '-':`
118			`*left = 1;`
119			`current_number = 0;`
120			`break;`
121			`case 'd':`
122			`case 'i':`
123			`case 'o':`
124			`case 'u':`
125			`case 'x':`
126			`case 'X':`
127			`case 'f':`
128			`case 'e':`
129			`case 'E':`
130			`case 'g':`
131			`case 'G':`
132			`case 'c':`
133			`case 'C':`
134			`case 's':`
135			`case 'S':`
136			`case 'p':`
137			`case 'n':`
138			`case 'r':`
139			`goto done;`
140			`default:`
141			`return(-1);`
142			`}`
143			`CORD_next(source);`
144			`}`
145			`return(-1);`
146			`done:`
147			`if (saw_number) {`
148			`if (saw_period) {`
149			`*prec = current_number;`
150			`} else {`
151			`*prec = NONE;`
152			`*width = current_number;`
153			`}`
154			`} else {`
155			`*prec = NONE;`
156			`}`
157			`buf[chars_so_far] = '\0';`
158			`return(result);`
159			`}`
160
161			`int CORD_vsprintf(CORD * out, CORD format, va_list args)`
162			`{`
163			`CORD_ec result;`
164			`register int count;`
165			`register char current;`
166			`CORD_pos pos;`
167			`char conv_spec[CONV_SPEC_LEN + 1];`
168
169			`CORD_ec_init(result);`
170			`for (CORD_set_pos(pos, format, 0); CORD_pos_valid(pos); CORD_next(pos)) {`
171			`current = CORD_pos_fetch(pos);`
172			`if (current == '%') {`
173			`CORD_next(pos);`
174			`if (!CORD_pos_valid(pos)) return(-1);`
175			`current = CORD_pos_fetch(pos);`
176			`if (current == '%') {`
177			`CORD_ec_append(result, current);`
178			`} else {`
179			`int width, prec;`
180			`int left_adj = 0;`
181			`int long_arg = 0;`
182			`CORD arg;`
183			`size_t len;`
184
185			`if (extract_conv_spec(pos, conv_spec,`
186			`&width, &prec,`
187			`&left_adj, &long_arg) < 0) {`
188			`return(-1);`
189			`}`
190			`current = CORD_pos_fetch(pos);`
191			`switch(current) {`
192			`case 'n':`
193			`/* Assign length to next arg */`
194			`if (long_arg == 0) {`
195			`int * pos_ptr;`
196			`pos_ptr = va_arg(args, int *);`
197			`*pos_ptr = ec_len(result);`
198			`} else if (long_arg > 0) {`
199			`long * pos_ptr;`
200			`pos_ptr = va_arg(args, long *);`
201			`*pos_ptr = ec_len(result);`
202			`} else {`
203			`short * pos_ptr;`
204			`pos_ptr = va_arg(args, short *);`
205			`*pos_ptr = ec_len(result);`
206			`}`
207			`goto done;`
208			`case 'r':`
209			`/* Append cord and any padding */`
210			`if (width == VARIABLE) width = va_arg(args, int);`
211			`if (prec == VARIABLE) prec = va_arg(args, int);`
212			`arg = va_arg(args, CORD);`
213			`len = CORD_len(arg);`
214			`if (prec != NONE && len > prec) {`
215			`if (prec < 0) return(-1);`
216			`arg = CORD_substr(arg, 0, prec);`
217			`len = prec;`
218			`}`
219			`if (width != NONE && len < width) {`
220			`char * blanks = GC_MALLOC_ATOMIC(width-len+1);`
221
222			`memset(blanks, ' ', width-len);`
223			`blanks[width-len] = '\0';`
224			`if (left_adj) {`
225			`arg = CORD_cat(arg, blanks);`
226			`} else {`
227			`arg = CORD_cat(blanks, arg);`
228			`}`
229			`}`
230			`CORD_ec_append_cord(result, arg);`
231			`goto done;`
232			`case 'c':`
233			`if (width == NONE && prec == NONE) {`
234			`register char c;`
235
236			`c = (char)va_arg(args, int);`
237			`CORD_ec_append(result, c);`
238			`goto done;`
239			`}`
240			`break;`
241			`case 's':`
242			`if (width == NONE && prec == NONE) {`
243			`char * str = va_arg(args, char *);`
244			`register char c;`
245
246			`while ((c = *str++)) {`
247			`CORD_ec_append(result, c);`
248			`}`
249			`goto done;`
250			`}`
251			`break;`
252			`default:`
253			`break;`
254			`}`
255			`/* Use standard sprintf to perform conversion */`
256			`{`
257			`register char * buf;`
258			`va_list vsprintf_args;`
259			`int max_size = 0;`
260			`int res;`
261			`# ifdef __va_copy`
262			`__va_copy(vsprintf_args, args);`
263			`# else`
264			`# if defined(__GNUC__) && !defined(__DJGPP__) /* and probably in other cases */`
265			`va_copy(vsprintf_args, args);`
266			`# else`
267			`vsprintf_args = args;`
268			`# endif`
269			`# endif`
270			`if (width == VARIABLE) width = va_arg(args, int);`
271			`if (prec == VARIABLE) prec = va_arg(args, int);`
272			`if (width != NONE) max_size = width;`
273			`if (prec != NONE && prec > max_size) max_size = prec;`
274			`max_size += CONV_RESULT_LEN;`
275			`if (max_size >= CORD_BUFSZ) {`
276			`buf = GC_MALLOC_ATOMIC(max_size + 1);`
277			`} else {`
278			`if (CORD_BUFSZ - (result[0].ec_bufptr-result[0].ec_buf)`
279			`< max_size) {`
280			`CORD_ec_flush_buf(result);`
281			`}`
282			`buf = result[0].ec_bufptr;`
283			`}`
284			`switch(current) {`
285			`case 'd':`
286			`case 'i':`
287			`case 'o':`
288			`case 'u':`
289			`case 'x':`
290			`case 'X':`
291			`case 'c':`
292			`if (long_arg <= 0) {`
293			`(void) va_arg(args, int);`
294			`} else if (long_arg > 0) {`
295			`(void) va_arg(args, long);`
296			`}`
297			`break;`
298			`case 's':`
299			`case 'p':`
300			`(void) va_arg(args, char *);`
301			`break;`
302			`case 'f':`
303			`case 'e':`
304			`case 'E':`
305			`case 'g':`
306			`case 'G':`
307			`(void) va_arg(args, double);`
308			`break;`
309			`default:`
310			`return(-1);`
311			`}`
312			`res = vsprintf(buf, conv_spec, vsprintf_args);`
313			`len = (size_t)res;`
314			`if ((char *)(GC_word)res == buf) {`
315			`/* old style vsprintf */`
316			`len = strlen(buf);`
317			`} else if (res < 0) {`
318			`return(-1);`
319			`}`
320			`if (buf != result[0].ec_bufptr) {`
321			`register char c;`
322
323			`while ((c = *buf++)) {`
324			`CORD_ec_append(result, c);`
325			`}`
326			`} else {`
327			`result[0].ec_bufptr = buf + len;`
328			`}`
329			`}`
330			`done:;`
331			`}`
332			`} else {`
333			`CORD_ec_append(result, current);`
334			`}`
335			`}`
336			`count = ec_len(result);`
337			`*out = CORD_balance(CORD_ec_to_cord(result));`
338			`return(count);`
339			`}`
340
341			`int CORD_sprintf(CORD * out, CORD format, ...)`
342			`{`
343			`va_list args;`
344			`int result;`
345
346			`va_start(args, format);`
347			`result = CORD_vsprintf(out, format, args);`
348			`va_end(args);`
349			`return(result);`
350			`}`
351
352			`int CORD_fprintf(FILE * f, CORD format, ...)`
353			`{`
354			`va_list args;`
355			`int result;`
356			`CORD out;`
357
358			`va_start(args, format);`
359			`result = CORD_vsprintf(&out, format, args);`
360			`va_end(args);`
361			`if (result > 0) CORD_put(out, f);`
362			`return(result);`
363			`}`
364
365			`int CORD_vfprintf(FILE * f, CORD format, va_list args)`
366			`{`
367			`int result;`
368			`CORD out;`
369
370			`result = CORD_vsprintf(&out, format, args);`
371			`if (result > 0) CORD_put(out, f);`
372			`return(result);`
373			`}`
374
375			`int CORD_printf(CORD format, ...)`
376			`{`
377			`va_list args;`
378			`int result;`
379			`CORD out;`
380
381			`va_start(args, format);`
382			`result = CORD_vsprintf(&out, format, args);`
383			`va_end(args);`
384			`if (result > 0) CORD_put(out, stdout);`
385			`return(result);`
386			`}`
387
388			`int CORD_vprintf(CORD format, va_list args)`
389			`{`
390			`int result;`
391			`CORD out;`
392
393			`result = CORD_vsprintf(&out, format, args);`
394			`if (result > 0) CORD_put(out, stdout);`
395			`return(result);`
396			`}`