1 91c13e54 2004-02-29 devnull /*
  2 91c13e54 2004-02-29 devnull  * The authors of this software are Rob Pike and Ken Thompson.
  3 91c13e54 2004-02-29 devnull  *              Copyright (c) 2002 by Lucent Technologies.
  4 91c13e54 2004-02-29 devnull  * Permission to use, copy, modify, and distribute this software for any
  5 91c13e54 2004-02-29 devnull  * purpose without fee is hereby granted, provided that this entire notice
  6 91c13e54 2004-02-29 devnull  * is included in all copies of any software which is or includes a copy
  7 91c13e54 2004-02-29 devnull  * or modification of this software and in all copies of the supporting
  8 91c13e54 2004-02-29 devnull  * documentation for such software.
  9 91c13e54 2004-02-29 devnull  * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
 10 c90dd38f 2004-12-29 devnull  * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
 11 c90dd38f 2004-12-29 devnull  * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
 12 91c13e54 2004-02-29 devnull  * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
 13 91c13e54 2004-02-29 devnull  */
 14 91c13e54 2004-02-29 devnull #include <stdarg.h>
 15 91c13e54 2004-02-29 devnull #include <string.h>
 16 e5aa96ac 2004-12-26 devnull #include "plan9.h"
 17 91c13e54 2004-02-29 devnull #include "fmt.h"
 18 91c13e54 2004-02-29 devnull #include "fmtdef.h"
 19 91c13e54 2004-02-29 devnull 
 20 91c13e54 2004-02-29 devnull /* format the output into f->to and return the number of characters fmted  */
 21 91c13e54 2004-02-29 devnull int
 22 91c13e54 2004-02-29 devnull dofmt(Fmt *f, char *fmt)
 23 91c13e54 2004-02-29 devnull {
 24 91c13e54 2004-02-29 devnull 	Rune rune, *rt, *rs;
 25 91c13e54 2004-02-29 devnull 	int r;
 26 91c13e54 2004-02-29 devnull 	char *t, *s;
 27 91c13e54 2004-02-29 devnull 	int n, nfmt;
 28 91c13e54 2004-02-29 devnull 
 29 91c13e54 2004-02-29 devnull 	nfmt = f->nfmt;
 30 91c13e54 2004-02-29 devnull 	for(;;){
 31 91c13e54 2004-02-29 devnull 		if(f->runes){
 32 91c13e54 2004-02-29 devnull 			rt = (Rune*)f->to;
 33 91c13e54 2004-02-29 devnull 			rs = (Rune*)f->stop;
 34 91c13e54 2004-02-29 devnull 			while((r = *(uchar*)fmt) && r != '%'){
 35 91c13e54 2004-02-29 devnull 				if(r < Runeself)
 36 91c13e54 2004-02-29 devnull 					fmt++;
 37 91c13e54 2004-02-29 devnull 				else{
 38 91c13e54 2004-02-29 devnull 					fmt += chartorune(&rune, fmt);
 39 91c13e54 2004-02-29 devnull 					r = rune;
 40 91c13e54 2004-02-29 devnull 				}
 41 91c13e54 2004-02-29 devnull 				FMTRCHAR(f, rt, rs, r);
 42 91c13e54 2004-02-29 devnull 			}
 43 91c13e54 2004-02-29 devnull 			fmt++;
 44 91c13e54 2004-02-29 devnull 			f->nfmt += rt - (Rune *)f->to;
 45 91c13e54 2004-02-29 devnull 			f->to = rt;
 46 91c13e54 2004-02-29 devnull 			if(!r)
 47 91c13e54 2004-02-29 devnull 				return f->nfmt - nfmt;
 48 91c13e54 2004-02-29 devnull 			f->stop = rs;
 49 91c13e54 2004-02-29 devnull 		}else{
 50 91c13e54 2004-02-29 devnull 			t = (char*)f->to;
 51 91c13e54 2004-02-29 devnull 			s = (char*)f->stop;
 52 91c13e54 2004-02-29 devnull 			while((r = *(uchar*)fmt) && r != '%'){
 53 91c13e54 2004-02-29 devnull 				if(r < Runeself){
 54 91c13e54 2004-02-29 devnull 					FMTCHAR(f, t, s, r);
 55 91c13e54 2004-02-29 devnull 					fmt++;
 56 91c13e54 2004-02-29 devnull 				}else{
 57 91c13e54 2004-02-29 devnull 					n = chartorune(&rune, fmt);
 58 91c13e54 2004-02-29 devnull 					if(t + n > s){
 59 91c13e54 2004-02-29 devnull 						t = (char*)__fmtflush(f, t, n);
 60 91c13e54 2004-02-29 devnull 						if(t != nil)
 61 91c13e54 2004-02-29 devnull 							s = (char*)f->stop;
 62 91c13e54 2004-02-29 devnull 						else
 63 91c13e54 2004-02-29 devnull 							return -1;
 64 91c13e54 2004-02-29 devnull 					}
 65 91c13e54 2004-02-29 devnull 					while(n--)
 66 91c13e54 2004-02-29 devnull 						*t++ = *fmt++;
 67 91c13e54 2004-02-29 devnull 				}
 68 91c13e54 2004-02-29 devnull 			}
 69 91c13e54 2004-02-29 devnull 			fmt++;
 70 91c13e54 2004-02-29 devnull 			f->nfmt += t - (char *)f->to;
 71 91c13e54 2004-02-29 devnull 			f->to = t;
 72 91c13e54 2004-02-29 devnull 			if(!r)
 73 91c13e54 2004-02-29 devnull 				return f->nfmt - nfmt;
 74 91c13e54 2004-02-29 devnull 			f->stop = s;
 75 91c13e54 2004-02-29 devnull 		}
 76 91c13e54 2004-02-29 devnull 
 77 91c13e54 2004-02-29 devnull 		fmt = (char*)__fmtdispatch(f, fmt, 0);
 78 91c13e54 2004-02-29 devnull 		if(fmt == nil)
 79 91c13e54 2004-02-29 devnull 			return -1;
 80 91c13e54 2004-02-29 devnull 	}
 81 91c13e54 2004-02-29 devnull }
 82 91c13e54 2004-02-29 devnull 
 83 91c13e54 2004-02-29 devnull void *
 84 91c13e54 2004-02-29 devnull __fmtflush(Fmt *f, void *t, int len)
 85 91c13e54 2004-02-29 devnull {
 86 91c13e54 2004-02-29 devnull 	if(f->runes)
 87 91c13e54 2004-02-29 devnull 		f->nfmt += (Rune*)t - (Rune*)f->to;
 88 91c13e54 2004-02-29 devnull 	else
 89 91c13e54 2004-02-29 devnull 		f->nfmt += (char*)t - (char *)f->to;
 90 91c13e54 2004-02-29 devnull 	f->to = t;
 91 91c13e54 2004-02-29 devnull 	if(f->flush == 0 || (*f->flush)(f) == 0 || (char*)f->to + len > (char*)f->stop){
 92 91c13e54 2004-02-29 devnull 		f->stop = f->to;
 93 91c13e54 2004-02-29 devnull 		return nil;
 94 91c13e54 2004-02-29 devnull 	}
 95 91c13e54 2004-02-29 devnull 	return f->to;
 96 91c13e54 2004-02-29 devnull }
 97 91c13e54 2004-02-29 devnull 
 98 91c13e54 2004-02-29 devnull /*
 99 91c13e54 2004-02-29 devnull  * put a formatted block of memory sz bytes long of n runes into the output buffer,
100 91c13e54 2004-02-29 devnull  * left/right justified in a field of at least f->width charactes
101 91c13e54 2004-02-29 devnull  */
102 91c13e54 2004-02-29 devnull int
103 91c13e54 2004-02-29 devnull __fmtpad(Fmt *f, int n)
104 91c13e54 2004-02-29 devnull {
105 91c13e54 2004-02-29 devnull 	char *t, *s;
106 91c13e54 2004-02-29 devnull 	int i;
107 91c13e54 2004-02-29 devnull 
108 91c13e54 2004-02-29 devnull 	t = (char*)f->to;
109 91c13e54 2004-02-29 devnull 	s = (char*)f->stop;
110 91c13e54 2004-02-29 devnull 	for(i = 0; i < n; i++)
111 91c13e54 2004-02-29 devnull 		FMTCHAR(f, t, s, ' ');
112 91c13e54 2004-02-29 devnull 	f->nfmt += t - (char *)f->to;
113 91c13e54 2004-02-29 devnull 	f->to = t;
114 91c13e54 2004-02-29 devnull 	return 0;
115 91c13e54 2004-02-29 devnull }
116 91c13e54 2004-02-29 devnull 
117 91c13e54 2004-02-29 devnull int
118 91c13e54 2004-02-29 devnull __rfmtpad(Fmt *f, int n)
119 91c13e54 2004-02-29 devnull {
120 91c13e54 2004-02-29 devnull 	Rune *t, *s;
121 91c13e54 2004-02-29 devnull 	int i;
122 91c13e54 2004-02-29 devnull 
123 91c13e54 2004-02-29 devnull 	t = (Rune*)f->to;
124 91c13e54 2004-02-29 devnull 	s = (Rune*)f->stop;
125 91c13e54 2004-02-29 devnull 	for(i = 0; i < n; i++)
126 91c13e54 2004-02-29 devnull 		FMTRCHAR(f, t, s, ' ');
127 91c13e54 2004-02-29 devnull 	f->nfmt += t - (Rune *)f->to;
128 91c13e54 2004-02-29 devnull 	f->to = t;
129 91c13e54 2004-02-29 devnull 	return 0;
130 91c13e54 2004-02-29 devnull }
131 91c13e54 2004-02-29 devnull 
132 91c13e54 2004-02-29 devnull int
133 91c13e54 2004-02-29 devnull __fmtcpy(Fmt *f, const void *vm, int n, int sz)
134 91c13e54 2004-02-29 devnull {
135 91c13e54 2004-02-29 devnull 	Rune *rt, *rs, r;
136 91c13e54 2004-02-29 devnull 	char *t, *s, *m, *me;
137 91c13e54 2004-02-29 devnull 	ulong fl;
138 91c13e54 2004-02-29 devnull 	int nc, w;
139 91c13e54 2004-02-29 devnull 
140 91c13e54 2004-02-29 devnull 	m = (char*)vm;
141 91c13e54 2004-02-29 devnull 	me = m + sz;
142 91c13e54 2004-02-29 devnull 	w = f->width;
143 91c13e54 2004-02-29 devnull 	fl = f->flags;
144 91c13e54 2004-02-29 devnull 	if((fl & FmtPrec) && n > f->prec)
145 91c13e54 2004-02-29 devnull 		n = f->prec;
146 91c13e54 2004-02-29 devnull 	if(f->runes){
147 91c13e54 2004-02-29 devnull 		if(!(fl & FmtLeft) && __rfmtpad(f, w - n) < 0)
148 91c13e54 2004-02-29 devnull 			return -1;
149 91c13e54 2004-02-29 devnull 		rt = (Rune*)f->to;
150 91c13e54 2004-02-29 devnull 		rs = (Rune*)f->stop;
151 91c13e54 2004-02-29 devnull 		for(nc = n; nc > 0; nc--){
152 91c13e54 2004-02-29 devnull 			r = *(uchar*)m;
153 91c13e54 2004-02-29 devnull 			if(r < Runeself)
154 91c13e54 2004-02-29 devnull 				m++;
155 91c13e54 2004-02-29 devnull 			else if((me - m) >= UTFmax || fullrune(m, me-m))
156 91c13e54 2004-02-29 devnull 				m += chartorune(&r, m);
157 91c13e54 2004-02-29 devnull 			else
158 91c13e54 2004-02-29 devnull 				break;
159 91c13e54 2004-02-29 devnull 			FMTRCHAR(f, rt, rs, r);
160 91c13e54 2004-02-29 devnull 		}
161 91c13e54 2004-02-29 devnull 		f->nfmt += rt - (Rune *)f->to;
162 91c13e54 2004-02-29 devnull 		f->to = rt;
163 91c13e54 2004-02-29 devnull 		if(fl & FmtLeft && __rfmtpad(f, w - n) < 0)
164 91c13e54 2004-02-29 devnull 			return -1;
165 91c13e54 2004-02-29 devnull 	}else{
166 91c13e54 2004-02-29 devnull 		if(!(fl & FmtLeft) && __fmtpad(f, w - n) < 0)
167 91c13e54 2004-02-29 devnull 			return -1;
168 91c13e54 2004-02-29 devnull 		t = (char*)f->to;
169 91c13e54 2004-02-29 devnull 		s = (char*)f->stop;
170 91c13e54 2004-02-29 devnull 		for(nc = n; nc > 0; nc--){
171 91c13e54 2004-02-29 devnull 			r = *(uchar*)m;
172 91c13e54 2004-02-29 devnull 			if(r < Runeself)
173 91c13e54 2004-02-29 devnull 				m++;
174 91c13e54 2004-02-29 devnull 			else if((me - m) >= UTFmax || fullrune(m, me-m))
175 91c13e54 2004-02-29 devnull 				m += chartorune(&r, m);
176 91c13e54 2004-02-29 devnull 			else
177 91c13e54 2004-02-29 devnull 				break;
178 91c13e54 2004-02-29 devnull 			FMTRUNE(f, t, s, r);
179 91c13e54 2004-02-29 devnull 		}
180 91c13e54 2004-02-29 devnull 		f->nfmt += t - (char *)f->to;
181 91c13e54 2004-02-29 devnull 		f->to = t;
182 91c13e54 2004-02-29 devnull 		if(fl & FmtLeft && __fmtpad(f, w - n) < 0)
183 91c13e54 2004-02-29 devnull 			return -1;
184 91c13e54 2004-02-29 devnull 	}
185 91c13e54 2004-02-29 devnull 	return 0;
186 91c13e54 2004-02-29 devnull }
187 91c13e54 2004-02-29 devnull 
188 91c13e54 2004-02-29 devnull int
189 91c13e54 2004-02-29 devnull __fmtrcpy(Fmt *f, const void *vm, int n)
190 91c13e54 2004-02-29 devnull {
191 91c13e54 2004-02-29 devnull 	Rune r, *m, *me, *rt, *rs;
192 91c13e54 2004-02-29 devnull 	char *t, *s;
193 91c13e54 2004-02-29 devnull 	ulong fl;
194 91c13e54 2004-02-29 devnull 	int w;
195 91c13e54 2004-02-29 devnull 
196 91c13e54 2004-02-29 devnull 	m = (Rune*)vm;
197 91c13e54 2004-02-29 devnull 	w = f->width;
198 91c13e54 2004-02-29 devnull 	fl = f->flags;
199 91c13e54 2004-02-29 devnull 	if((fl & FmtPrec) && n > f->prec)
200 91c13e54 2004-02-29 devnull 		n = f->prec;
201 91c13e54 2004-02-29 devnull 	if(f->runes){
202 91c13e54 2004-02-29 devnull 		if(!(fl & FmtLeft) && __rfmtpad(f, w - n) < 0)
203 91c13e54 2004-02-29 devnull 			return -1;
204 91c13e54 2004-02-29 devnull 		rt = (Rune*)f->to;
205 91c13e54 2004-02-29 devnull 		rs = (Rune*)f->stop;
206 91c13e54 2004-02-29 devnull 		for(me = m + n; m < me; m++)
207 91c13e54 2004-02-29 devnull 			FMTRCHAR(f, rt, rs, *m);
208 91c13e54 2004-02-29 devnull 		f->nfmt += rt - (Rune *)f->to;
209 91c13e54 2004-02-29 devnull 		f->to = rt;
210 91c13e54 2004-02-29 devnull 		if(fl & FmtLeft && __rfmtpad(f, w - n) < 0)
211 91c13e54 2004-02-29 devnull 			return -1;
212 91c13e54 2004-02-29 devnull 	}else{
213 91c13e54 2004-02-29 devnull 		if(!(fl & FmtLeft) && __fmtpad(f, w - n) < 0)
214 91c13e54 2004-02-29 devnull 			return -1;
215 91c13e54 2004-02-29 devnull 		t = (char*)f->to;
216 91c13e54 2004-02-29 devnull 		s = (char*)f->stop;
217 91c13e54 2004-02-29 devnull 		for(me = m + n; m < me; m++){
218 91c13e54 2004-02-29 devnull 			r = *m;
219 91c13e54 2004-02-29 devnull 			FMTRUNE(f, t, s, r);
220 91c13e54 2004-02-29 devnull 		}
221 91c13e54 2004-02-29 devnull 		f->nfmt += t - (char *)f->to;
222 91c13e54 2004-02-29 devnull 		f->to = t;
223 91c13e54 2004-02-29 devnull 		if(fl & FmtLeft && __fmtpad(f, w - n) < 0)
224 91c13e54 2004-02-29 devnull 			return -1;
225 91c13e54 2004-02-29 devnull 	}
226 91c13e54 2004-02-29 devnull 	return 0;
227 91c13e54 2004-02-29 devnull }
228 91c13e54 2004-02-29 devnull 
229 91c13e54 2004-02-29 devnull /* fmt out one character */
230 91c13e54 2004-02-29 devnull int
231 91c13e54 2004-02-29 devnull __charfmt(Fmt *f)
232 91c13e54 2004-02-29 devnull {
233 91c13e54 2004-02-29 devnull 	char x[1];
234 91c13e54 2004-02-29 devnull 
235 91c13e54 2004-02-29 devnull 	x[0] = va_arg(f->args, int);
236 91c13e54 2004-02-29 devnull 	f->prec = 1;
237 91c13e54 2004-02-29 devnull 	return __fmtcpy(f, (const char*)x, 1, 1);
238 91c13e54 2004-02-29 devnull }
239 91c13e54 2004-02-29 devnull 
240 91c13e54 2004-02-29 devnull /* fmt out one rune */
241 91c13e54 2004-02-29 devnull int
242 91c13e54 2004-02-29 devnull __runefmt(Fmt *f)
243 91c13e54 2004-02-29 devnull {
244 91c13e54 2004-02-29 devnull 	Rune x[1];
245 91c13e54 2004-02-29 devnull 
246 91c13e54 2004-02-29 devnull 	x[0] = va_arg(f->args, int);
247 91c13e54 2004-02-29 devnull 	return __fmtrcpy(f, (const void*)x, 1);
248 91c13e54 2004-02-29 devnull }
249 91c13e54 2004-02-29 devnull 
250 91c13e54 2004-02-29 devnull /* public helper routine: fmt out a null terminated string already in hand */
251 91c13e54 2004-02-29 devnull int
252 91c13e54 2004-02-29 devnull fmtstrcpy(Fmt *f, char *s)
253 91c13e54 2004-02-29 devnull {
254 3f1a2197 2004-12-26 devnull 	int i, j;
255 3f1a2197 2004-12-26 devnull 	Rune r;
256 3f1a2197 2004-12-26 devnull 
257 91c13e54 2004-02-29 devnull 	if(!s)
258 91c13e54 2004-02-29 devnull 		return __fmtcpy(f, "<nil>", 5, 5);
259 91c13e54 2004-02-29 devnull 	/* if precision is specified, make sure we don't wander off the end */
260 91c13e54 2004-02-29 devnull 	if(f->flags & FmtPrec){
261 3f1a2197 2004-12-26 devnull 		i = 0;
262 3f1a2197 2004-12-26 devnull 		for(j=0; j<f->prec && s[i]; j++)
263 3f1a2197 2004-12-26 devnull 			i += chartorune(&r, s+i);
264 3f1a2197 2004-12-26 devnull 		return __fmtcpy(f, s, j, i);
265 91c13e54 2004-02-29 devnull 	}
266 91c13e54 2004-02-29 devnull 	return __fmtcpy(f, s, utflen(s), strlen(s));
267 91c13e54 2004-02-29 devnull }
268 91c13e54 2004-02-29 devnull 
269 91c13e54 2004-02-29 devnull /* fmt out a null terminated utf string */
270 91c13e54 2004-02-29 devnull int
271 91c13e54 2004-02-29 devnull __strfmt(Fmt *f)
272 91c13e54 2004-02-29 devnull {
273 91c13e54 2004-02-29 devnull 	char *s;
274 91c13e54 2004-02-29 devnull 
275 91c13e54 2004-02-29 devnull 	s = va_arg(f->args, char *);
276 91c13e54 2004-02-29 devnull 	return fmtstrcpy(f, s);
277 91c13e54 2004-02-29 devnull }
278 91c13e54 2004-02-29 devnull 
279 91c13e54 2004-02-29 devnull /* public helper routine: fmt out a null terminated rune string already in hand */
280 91c13e54 2004-02-29 devnull int
281 91c13e54 2004-02-29 devnull fmtrunestrcpy(Fmt *f, Rune *s)
282 91c13e54 2004-02-29 devnull {
283 91c13e54 2004-02-29 devnull 	Rune *e;
284 91c13e54 2004-02-29 devnull 	int n, p;
285 91c13e54 2004-02-29 devnull 
286 91c13e54 2004-02-29 devnull 	if(!s)
287 91c13e54 2004-02-29 devnull 		return __fmtcpy(f, "<nil>", 5, 5);
288 91c13e54 2004-02-29 devnull 	/* if precision is specified, make sure we don't wander off the end */
289 91c13e54 2004-02-29 devnull 	if(f->flags & FmtPrec){
290 91c13e54 2004-02-29 devnull 		p = f->prec;
291 91c13e54 2004-02-29 devnull 		for(n = 0; n < p; n++)
292 91c13e54 2004-02-29 devnull 			if(s[n] == 0)
293 91c13e54 2004-02-29 devnull 				break;
294 91c13e54 2004-02-29 devnull 	}else{
295 91c13e54 2004-02-29 devnull 		for(e = s; *e; e++)
296 91c13e54 2004-02-29 devnull 			;
297 91c13e54 2004-02-29 devnull 		n = e - s;
298 91c13e54 2004-02-29 devnull 	}
299 91c13e54 2004-02-29 devnull 	return __fmtrcpy(f, s, n);
300 91c13e54 2004-02-29 devnull }
301 91c13e54 2004-02-29 devnull 
302 91c13e54 2004-02-29 devnull /* fmt out a null terminated rune string */
303 91c13e54 2004-02-29 devnull int
304 91c13e54 2004-02-29 devnull __runesfmt(Fmt *f)
305 91c13e54 2004-02-29 devnull {
306 91c13e54 2004-02-29 devnull 	Rune *s;
307 91c13e54 2004-02-29 devnull 
308 91c13e54 2004-02-29 devnull 	s = va_arg(f->args, Rune *);
309 91c13e54 2004-02-29 devnull 	return fmtrunestrcpy(f, s);
310 91c13e54 2004-02-29 devnull }
311 91c13e54 2004-02-29 devnull 
312 91c13e54 2004-02-29 devnull /* fmt a % */
313 91c13e54 2004-02-29 devnull int
314 91c13e54 2004-02-29 devnull __percentfmt(Fmt *f)
315 91c13e54 2004-02-29 devnull {
316 91c13e54 2004-02-29 devnull 	Rune x[1];
317 91c13e54 2004-02-29 devnull 
318 91c13e54 2004-02-29 devnull 	x[0] = f->r;
319 91c13e54 2004-02-29 devnull 	f->prec = 1;
320 91c13e54 2004-02-29 devnull 	return __fmtrcpy(f, (const void*)x, 1);
321 91c13e54 2004-02-29 devnull }
322 91c13e54 2004-02-29 devnull 
323 91c13e54 2004-02-29 devnull /* fmt an integer */
324 91c13e54 2004-02-29 devnull int
325 91c13e54 2004-02-29 devnull __ifmt(Fmt *f)
326 91c13e54 2004-02-29 devnull {
327 91c13e54 2004-02-29 devnull 	char buf[70], *p, *conv;
328 91c13e54 2004-02-29 devnull 	uvlong vu;
329 91c13e54 2004-02-29 devnull 	ulong u;
330 91c13e54 2004-02-29 devnull 	int neg, base, i, n, fl, w, isv;
331 91c13e54 2004-02-29 devnull 
332 91c13e54 2004-02-29 devnull 	neg = 0;
333 91c13e54 2004-02-29 devnull 	fl = f->flags;
334 91c13e54 2004-02-29 devnull 	isv = 0;
335 91c13e54 2004-02-29 devnull 	vu = 0;
336 91c13e54 2004-02-29 devnull 	u = 0;
337 3f1a2197 2004-12-26 devnull #ifndef PLAN9PORT
338 91c13e54 2004-02-29 devnull 	/*
339 3f1a2197 2004-12-26 devnull 	 * Unsigned verbs for ANSI C
340 91c13e54 2004-02-29 devnull 	 */
341 91c13e54 2004-02-29 devnull 	switch(f->r){
342 91c13e54 2004-02-29 devnull 	case 'x':
343 91c13e54 2004-02-29 devnull 	case 'X':
344 e5aa96ac 2004-12-26 devnull 	case 'o':
345 e5aa96ac 2004-12-26 devnull 	case 'u':
346 3f1a2197 2004-12-26 devnull 	case 'p':
347 91c13e54 2004-02-29 devnull 		fl |= FmtUnsigned;
348 3f1a2197 2004-12-26 devnull 		fl &= ~(FmtSign|FmtSpace);
349 91c13e54 2004-02-29 devnull 		break;
350 91c13e54 2004-02-29 devnull 	}
351 3f1a2197 2004-12-26 devnull #endif
352 91c13e54 2004-02-29 devnull 	if(f->r == 'p'){
353 91c13e54 2004-02-29 devnull 		u = (ulong)va_arg(f->args, void*);
354 91c13e54 2004-02-29 devnull 		f->r = 'x';
355 91c13e54 2004-02-29 devnull 		fl |= FmtUnsigned;
356 91c13e54 2004-02-29 devnull 	}else if(fl & FmtVLong){
357 91c13e54 2004-02-29 devnull 		isv = 1;
358 91c13e54 2004-02-29 devnull 		if(fl & FmtUnsigned)
359 91c13e54 2004-02-29 devnull 			vu = va_arg(f->args, uvlong);
360 91c13e54 2004-02-29 devnull 		else
361 91c13e54 2004-02-29 devnull 			vu = va_arg(f->args, vlong);
362 91c13e54 2004-02-29 devnull 	}else if(fl & FmtLong){
363 91c13e54 2004-02-29 devnull 		if(fl & FmtUnsigned)
364 91c13e54 2004-02-29 devnull 			u = va_arg(f->args, ulong);
365 91c13e54 2004-02-29 devnull 		else
366 91c13e54 2004-02-29 devnull 			u = va_arg(f->args, long);
367 91c13e54 2004-02-29 devnull 	}else if(fl & FmtByte){
368 91c13e54 2004-02-29 devnull 		if(fl & FmtUnsigned)
369 91c13e54 2004-02-29 devnull 			u = (uchar)va_arg(f->args, int);
370 91c13e54 2004-02-29 devnull 		else
371 91c13e54 2004-02-29 devnull 			u = (char)va_arg(f->args, int);
372 91c13e54 2004-02-29 devnull 	}else if(fl & FmtShort){
373 91c13e54 2004-02-29 devnull 		if(fl & FmtUnsigned)
374 91c13e54 2004-02-29 devnull 			u = (ushort)va_arg(f->args, int);
375 91c13e54 2004-02-29 devnull 		else
376 91c13e54 2004-02-29 devnull 			u = (short)va_arg(f->args, int);
377 91c13e54 2004-02-29 devnull 	}else{
378 91c13e54 2004-02-29 devnull 		if(fl & FmtUnsigned)
379 91c13e54 2004-02-29 devnull 			u = va_arg(f->args, uint);
380 91c13e54 2004-02-29 devnull 		else
381 91c13e54 2004-02-29 devnull 			u = va_arg(f->args, int);
382 91c13e54 2004-02-29 devnull 	}
383 91c13e54 2004-02-29 devnull 	conv = "0123456789abcdef";
384 91c13e54 2004-02-29 devnull 	switch(f->r){
385 91c13e54 2004-02-29 devnull 	case 'd':
386 91c13e54 2004-02-29 devnull 	case 'i':
387 91c13e54 2004-02-29 devnull 	case 'u':
388 91c13e54 2004-02-29 devnull 		base = 10;
389 91c13e54 2004-02-29 devnull 		break;
390 91c13e54 2004-02-29 devnull 	case 'x':
391 91c13e54 2004-02-29 devnull 		base = 16;
392 91c13e54 2004-02-29 devnull 		break;
393 91c13e54 2004-02-29 devnull 	case 'X':
394 91c13e54 2004-02-29 devnull 		base = 16;
395 91c13e54 2004-02-29 devnull 		conv = "0123456789ABCDEF";
396 91c13e54 2004-02-29 devnull 		break;
397 91c13e54 2004-02-29 devnull 	case 'b':
398 91c13e54 2004-02-29 devnull 		base = 2;
399 91c13e54 2004-02-29 devnull 		break;
400 91c13e54 2004-02-29 devnull 	case 'o':
401 91c13e54 2004-02-29 devnull 		base = 8;
402 91c13e54 2004-02-29 devnull 		break;
403 91c13e54 2004-02-29 devnull 	default:
404 91c13e54 2004-02-29 devnull 		return -1;
405 91c13e54 2004-02-29 devnull 	}
406 3f1a2197 2004-12-26 devnull 	if(!(fl & FmtUnsigned)){
407 91c13e54 2004-02-29 devnull 		if(isv && (vlong)vu < 0){
408 91c13e54 2004-02-29 devnull 			vu = -(vlong)vu;
409 91c13e54 2004-02-29 devnull 			neg = 1;
410 91c13e54 2004-02-29 devnull 		}else if(!isv && (long)u < 0){
411 91c13e54 2004-02-29 devnull 			u = -(long)u;
412 91c13e54 2004-02-29 devnull 			neg = 1;
413 91c13e54 2004-02-29 devnull 		}
414 91c13e54 2004-02-29 devnull 	}
415 91c13e54 2004-02-29 devnull 	p = buf + sizeof buf - 1;
416 91c13e54 2004-02-29 devnull 	n = 0;
417 91c13e54 2004-02-29 devnull 	if(isv){
418 91c13e54 2004-02-29 devnull 		while(vu){
419 91c13e54 2004-02-29 devnull 			i = vu % base;
420 91c13e54 2004-02-29 devnull 			vu /= base;
421 91c13e54 2004-02-29 devnull 			if((fl & FmtComma) && n % 4 == 3){
422 91c13e54 2004-02-29 devnull 				*p-- = ',';
423 91c13e54 2004-02-29 devnull 				n++;
424 91c13e54 2004-02-29 devnull 			}
425 91c13e54 2004-02-29 devnull 			*p-- = conv[i];
426 91c13e54 2004-02-29 devnull 			n++;
427 91c13e54 2004-02-29 devnull 		}
428 91c13e54 2004-02-29 devnull 	}else{
429 91c13e54 2004-02-29 devnull 		while(u){
430 91c13e54 2004-02-29 devnull 			i = u % base;
431 91c13e54 2004-02-29 devnull 			u /= base;
432 91c13e54 2004-02-29 devnull 			if((fl & FmtComma) && n % 4 == 3){
433 91c13e54 2004-02-29 devnull 				*p-- = ',';
434 91c13e54 2004-02-29 devnull 				n++;
435 91c13e54 2004-02-29 devnull 			}
436 91c13e54 2004-02-29 devnull 			*p-- = conv[i];
437 91c13e54 2004-02-29 devnull 			n++;
438 91c13e54 2004-02-29 devnull 		}
439 91c13e54 2004-02-29 devnull 	}
440 91c13e54 2004-02-29 devnull 	if(n == 0){
441 3f1a2197 2004-12-26 devnull 		*p-- = '0';
442 3f1a2197 2004-12-26 devnull 		n = 1;
443 91c13e54 2004-02-29 devnull 	}
444 91c13e54 2004-02-29 devnull 	for(w = f->prec; n < w && p > buf+3; n++)
445 91c13e54 2004-02-29 devnull 		*p-- = '0';
446 91c13e54 2004-02-29 devnull 	if(neg || (fl & (FmtSign|FmtSpace)))
447 91c13e54 2004-02-29 devnull 		n++;
448 91c13e54 2004-02-29 devnull 	if(fl & FmtSharp){
449 91c13e54 2004-02-29 devnull 		if(base == 16)
450 91c13e54 2004-02-29 devnull 			n += 2;
451 91c13e54 2004-02-29 devnull 		else if(base == 8){
452 91c13e54 2004-02-29 devnull 			if(p[1] == '0')
453 91c13e54 2004-02-29 devnull 				fl &= ~FmtSharp;
454 91c13e54 2004-02-29 devnull 			else
455 91c13e54 2004-02-29 devnull 				n++;
456 91c13e54 2004-02-29 devnull 		}
457 91c13e54 2004-02-29 devnull 	}
458 91c13e54 2004-02-29 devnull 	if((fl & FmtZero) && !(fl & (FmtLeft|FmtPrec))){
459 91c13e54 2004-02-29 devnull 		for(w = f->width; n < w && p > buf+3; n++)
460 91c13e54 2004-02-29 devnull 			*p-- = '0';
461 91c13e54 2004-02-29 devnull 		f->width = 0;
462 91c13e54 2004-02-29 devnull 	}
463 91c13e54 2004-02-29 devnull 	if(fl & FmtSharp){
464 91c13e54 2004-02-29 devnull 		if(base == 16)
465 91c13e54 2004-02-29 devnull 			*p-- = f->r;
466 91c13e54 2004-02-29 devnull 		if(base == 16 || base == 8)
467 91c13e54 2004-02-29 devnull 			*p-- = '0';
468 91c13e54 2004-02-29 devnull 	}
469 91c13e54 2004-02-29 devnull 	if(neg)
470 91c13e54 2004-02-29 devnull 		*p-- = '-';
471 91c13e54 2004-02-29 devnull 	else if(fl & FmtSign)
472 91c13e54 2004-02-29 devnull 		*p-- = '+';
473 91c13e54 2004-02-29 devnull 	else if(fl & FmtSpace)
474 91c13e54 2004-02-29 devnull 		*p-- = ' ';
475 91c13e54 2004-02-29 devnull 	f->flags &= ~FmtPrec;
476 91c13e54 2004-02-29 devnull 	return __fmtcpy(f, p + 1, n, n);
477 91c13e54 2004-02-29 devnull }
478 91c13e54 2004-02-29 devnull 
479 91c13e54 2004-02-29 devnull int
480 91c13e54 2004-02-29 devnull __countfmt(Fmt *f)
481 91c13e54 2004-02-29 devnull {
482 91c13e54 2004-02-29 devnull 	void *p;
483 91c13e54 2004-02-29 devnull 	ulong fl;
484 91c13e54 2004-02-29 devnull 
485 91c13e54 2004-02-29 devnull 	fl = f->flags;
486 91c13e54 2004-02-29 devnull 	p = va_arg(f->args, void*);
487 91c13e54 2004-02-29 devnull 	if(fl & FmtVLong){
488 91c13e54 2004-02-29 devnull 		*(vlong*)p = f->nfmt;
489 91c13e54 2004-02-29 devnull 	}else if(fl & FmtLong){
490 91c13e54 2004-02-29 devnull 		*(long*)p = f->nfmt;
491 91c13e54 2004-02-29 devnull 	}else if(fl & FmtByte){
492 91c13e54 2004-02-29 devnull 		*(char*)p = f->nfmt;
493 91c13e54 2004-02-29 devnull 	}else if(fl & FmtShort){
494 91c13e54 2004-02-29 devnull 		*(short*)p = f->nfmt;
495 91c13e54 2004-02-29 devnull 	}else{
496 91c13e54 2004-02-29 devnull 		*(int*)p = f->nfmt;
497 91c13e54 2004-02-29 devnull 	}
498 91c13e54 2004-02-29 devnull 	return 0;
499 91c13e54 2004-02-29 devnull }
500 91c13e54 2004-02-29 devnull 
501 91c13e54 2004-02-29 devnull int
502 91c13e54 2004-02-29 devnull __flagfmt(Fmt *f)
503 91c13e54 2004-02-29 devnull {
504 91c13e54 2004-02-29 devnull 	switch(f->r){
505 91c13e54 2004-02-29 devnull 	case ',':
506 91c13e54 2004-02-29 devnull 		f->flags |= FmtComma;
507 91c13e54 2004-02-29 devnull 		break;
508 91c13e54 2004-02-29 devnull 	case '-':
509 91c13e54 2004-02-29 devnull 		f->flags |= FmtLeft;
510 91c13e54 2004-02-29 devnull 		break;
511 91c13e54 2004-02-29 devnull 	case '+':
512 91c13e54 2004-02-29 devnull 		f->flags |= FmtSign;
513 91c13e54 2004-02-29 devnull 		break;
514 91c13e54 2004-02-29 devnull 	case '#':
515 91c13e54 2004-02-29 devnull 		f->flags |= FmtSharp;
516 91c13e54 2004-02-29 devnull 		break;
517 91c13e54 2004-02-29 devnull 	case ' ':
518 91c13e54 2004-02-29 devnull 		f->flags |= FmtSpace;
519 91c13e54 2004-02-29 devnull 		break;
520 91c13e54 2004-02-29 devnull 	case 'u':
521 91c13e54 2004-02-29 devnull 		f->flags |= FmtUnsigned;
522 91c13e54 2004-02-29 devnull 		break;
523 91c13e54 2004-02-29 devnull 	case 'h':
524 91c13e54 2004-02-29 devnull 		if(f->flags & FmtShort)
525 91c13e54 2004-02-29 devnull 			f->flags |= FmtByte;
526 91c13e54 2004-02-29 devnull 		f->flags |= FmtShort;
527 91c13e54 2004-02-29 devnull 		break;
528 91c13e54 2004-02-29 devnull 	case 'L':
529 91c13e54 2004-02-29 devnull 		f->flags |= FmtLDouble;
530 91c13e54 2004-02-29 devnull 		break;
531 91c13e54 2004-02-29 devnull 	case 'l':
532 91c13e54 2004-02-29 devnull 		if(f->flags & FmtLong)
533 91c13e54 2004-02-29 devnull 			f->flags |= FmtVLong;
534 91c13e54 2004-02-29 devnull 		f->flags |= FmtLong;
535 91c13e54 2004-02-29 devnull 		break;
536 91c13e54 2004-02-29 devnull 	}
537 91c13e54 2004-02-29 devnull 	return 1;
538 91c13e54 2004-02-29 devnull }
539 91c13e54 2004-02-29 devnull 
540 91c13e54 2004-02-29 devnull /* default error format */
541 91c13e54 2004-02-29 devnull int
542 91c13e54 2004-02-29 devnull __badfmt(Fmt *f)
543 91c13e54 2004-02-29 devnull {
544 91c13e54 2004-02-29 devnull 	char x[3];
545 91c13e54 2004-02-29 devnull 
546 91c13e54 2004-02-29 devnull 	x[0] = '%';
547 91c13e54 2004-02-29 devnull 	x[1] = f->r;
548 91c13e54 2004-02-29 devnull 	x[2] = '%';
549 91c13e54 2004-02-29 devnull 	f->prec = 3;
550 91c13e54 2004-02-29 devnull 	__fmtcpy(f, (const void*)x, 3, 3);
551 91c13e54 2004-02-29 devnull 	return 0;
552 91c13e54 2004-02-29 devnull }