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e334a159 LW |
1 | /* $RCSfile: form.c,v $$Revision: 4.0.1.3 $$Date: 92/06/08 13:21:42 $ |
2 | * | |
3 | * Copyright (c) 1991, Larry Wall | |
4 | * | |
5 | * You may distribute under the terms of either the GNU General Public | |
6 | * License or the Artistic License, as specified in the README file. | |
7 | * | |
8 | * $Log: form.c,v $ | |
9 | * Revision 4.0.1.3 92/06/08 13:21:42 lwall | |
10 | * patch20: removed implicit int declarations on funcions | |
11 | * patch20: form feed for formats is now specifiable via $^L | |
12 | * patch20: Perl now distinguishes overlapped copies from non-overlapped | |
13 | * | |
14 | * Revision 4.0.1.2 91/11/05 17:18:43 lwall | |
15 | * patch11: formats didn't fill their fields as well as they could | |
16 | * patch11: ^ fields chopped hyphens on line break | |
17 | * patch11: # fields could write outside allocated memory | |
18 | * | |
19 | * Revision 4.0.1.1 91/06/07 11:07:59 lwall | |
20 | * patch4: new copyright notice | |
21 | * patch4: default top-of-form format is now FILEHANDLE_TOP | |
22 | * | |
23 | * Revision 4.0 91/03/20 01:19:23 lwall | |
24 | * 4.0 baseline. | |
25 | * | |
26 | */ | |
27 | ||
28 | #include "EXTERN.h" | |
29 | #include "perl.h" | |
30 | ||
31 | /* Forms stuff */ | |
32 | ||
33 | static int countlines(); | |
34 | ||
35 | void | |
36 | form_parseargs(fcmd) | |
37 | register FCMD *fcmd; | |
38 | { | |
39 | register int i; | |
40 | register ARG *arg; | |
41 | register int items; | |
42 | STR *str; | |
43 | ARG *parselist(); | |
44 | line_t oldline = curcmd->c_line; | |
45 | int oldsave = savestack->ary_fill; | |
46 | ||
47 | str = fcmd->f_unparsed; | |
48 | curcmd->c_line = fcmd->f_line; | |
49 | fcmd->f_unparsed = Nullstr; | |
50 | (void)savehptr(&curstash); | |
51 | curstash = str->str_u.str_hash; | |
52 | arg = parselist(str); | |
53 | restorelist(oldsave); | |
54 | ||
55 | items = arg->arg_len - 1; /* ignore $$ on end */ | |
56 | for (i = 1; i <= items; i++) { | |
57 | if (!fcmd || fcmd->f_type == F_NULL) | |
58 | fatal("Too many field values"); | |
59 | dehoist(arg,i); | |
60 | fcmd->f_expr = make_op(O_ITEM,1, | |
61 | arg[i].arg_ptr.arg_arg,Nullarg,Nullarg); | |
62 | if (fcmd->f_flags & FC_CHOP) { | |
63 | if ((fcmd->f_expr[1].arg_type & A_MASK) == A_STAB) | |
64 | fcmd->f_expr[1].arg_type = A_LVAL; | |
65 | else if ((fcmd->f_expr[1].arg_type & A_MASK) == A_EXPR) | |
66 | fcmd->f_expr[1].arg_type = A_LEXPR; | |
67 | else | |
68 | fatal("^ field requires scalar lvalue"); | |
69 | } | |
70 | fcmd = fcmd->f_next; | |
71 | } | |
72 | if (fcmd && fcmd->f_type) | |
73 | fatal("Not enough field values"); | |
74 | curcmd->c_line = oldline; | |
75 | Safefree(arg); | |
76 | str_free(str); | |
77 | } | |
78 | ||
79 | int newsize; | |
80 | ||
81 | #define CHKLEN(allow) \ | |
82 | newsize = (d - orec->o_str) + (allow); \ | |
83 | if (newsize >= curlen) { \ | |
84 | curlen = d - orec->o_str; \ | |
85 | GROWSTR(&orec->o_str,&orec->o_len,orec->o_len + (allow)); \ | |
86 | d = orec->o_str + curlen; /* in case it moves */ \ | |
87 | curlen = orec->o_len - 2; \ | |
88 | } | |
89 | ||
90 | void | |
91 | format(orec,fcmd,sp) | |
92 | register struct outrec *orec; | |
93 | register FCMD *fcmd; | |
94 | int sp; | |
95 | { | |
96 | register char *d = orec->o_str; | |
97 | register char *s; | |
98 | register int curlen = orec->o_len - 2; | |
99 | register int size; | |
100 | FCMD *nextfcmd; | |
101 | FCMD *linebeg = fcmd; | |
102 | char tmpchar; | |
103 | char *t; | |
104 | CMD mycmd; | |
105 | STR *str; | |
106 | char *chophere; | |
107 | ||
108 | mycmd.c_type = C_NULL; | |
109 | orec->o_lines = 0; | |
110 | for (; fcmd; fcmd = nextfcmd) { | |
111 | nextfcmd = fcmd->f_next; | |
112 | CHKLEN(fcmd->f_presize); | |
113 | /*SUPPRESS 560*/ | |
114 | if (s = fcmd->f_pre) { | |
115 | while (*s) { | |
116 | if (*s == '\n') { | |
117 | while (d > orec->o_str && (d[-1] == ' ' || d[-1] == '\t')) | |
118 | d--; | |
119 | if (fcmd->f_flags & FC_NOBLANK) { | |
120 | if (d == orec->o_str || d[-1] == '\n') { | |
121 | orec->o_lines--; /* don't print blank line */ | |
122 | linebeg = fcmd->f_next; | |
123 | break; | |
124 | } | |
125 | else if (fcmd->f_flags & FC_REPEAT) | |
126 | nextfcmd = linebeg; | |
127 | else | |
128 | linebeg = fcmd->f_next; | |
129 | } | |
130 | else | |
131 | linebeg = fcmd->f_next; | |
132 | } | |
133 | *d++ = *s++; | |
134 | } | |
135 | } | |
136 | if (fcmd->f_unparsed) | |
137 | form_parseargs(fcmd); | |
138 | switch (fcmd->f_type) { | |
139 | case F_NULL: | |
140 | orec->o_lines++; | |
141 | break; | |
142 | case F_LEFT: | |
143 | (void)eval(fcmd->f_expr,G_SCALAR,sp); | |
144 | str = stack->ary_array[sp+1]; | |
145 | s = str_get(str); | |
146 | size = fcmd->f_size; | |
147 | CHKLEN(size); | |
148 | chophere = Nullch; | |
149 | while (size && *s && *s != '\n') { | |
150 | if (*s == '\t') | |
151 | *s = ' '; | |
152 | size--; | |
153 | if (*s && index(chopset,(*d++ = *s++))) | |
154 | chophere = s; | |
155 | if (*s == '\n' && (fcmd->f_flags & FC_CHOP)) | |
156 | *s = ' '; | |
157 | } | |
158 | if (size || !*s) | |
159 | chophere = s; | |
160 | else if (chophere && chophere < s && *s && index(chopset,*s)) | |
161 | chophere = s; | |
162 | if (fcmd->f_flags & FC_CHOP) { | |
163 | if (!chophere) | |
164 | chophere = s; | |
165 | size += (s - chophere); | |
166 | d -= (s - chophere); | |
167 | if (fcmd->f_flags & FC_MORE && | |
168 | *chophere && strNE(chophere,"\n")) { | |
169 | while (size < 3) { | |
170 | d--; | |
171 | size++; | |
172 | } | |
173 | while (d[-1] == ' ' && size < fcmd->f_size) { | |
174 | d--; | |
175 | size++; | |
176 | } | |
177 | *d++ = '.'; | |
178 | *d++ = '.'; | |
179 | *d++ = '.'; | |
180 | size -= 3; | |
181 | } | |
182 | while (*chophere && index(chopset,*chophere) | |
183 | && isSPACE(*chophere)) | |
184 | chophere++; | |
185 | str_chop(str,chophere); | |
186 | } | |
187 | if (fcmd->f_next && fcmd->f_next->f_pre[0] == '\n') | |
188 | size = 0; /* no spaces before newline */ | |
189 | while (size) { | |
190 | size--; | |
191 | *d++ = ' '; | |
192 | } | |
193 | break; | |
194 | case F_RIGHT: | |
195 | (void)eval(fcmd->f_expr,G_SCALAR,sp); | |
196 | str = stack->ary_array[sp+1]; | |
197 | t = s = str_get(str); | |
198 | size = fcmd->f_size; | |
199 | CHKLEN(size); | |
200 | chophere = Nullch; | |
201 | while (size && *s && *s != '\n') { | |
202 | if (*s == '\t') | |
203 | *s = ' '; | |
204 | size--; | |
205 | if (*s && index(chopset,*s++)) | |
206 | chophere = s; | |
207 | if (*s == '\n' && (fcmd->f_flags & FC_CHOP)) | |
208 | *s = ' '; | |
209 | } | |
210 | if (size || !*s) | |
211 | chophere = s; | |
212 | else if (chophere && chophere < s && *s && index(chopset,*s)) | |
213 | chophere = s; | |
214 | if (fcmd->f_flags & FC_CHOP) { | |
215 | if (!chophere) | |
216 | chophere = s; | |
217 | size += (s - chophere); | |
218 | s = chophere; | |
219 | while (*chophere && index(chopset,*chophere) | |
220 | && isSPACE(*chophere)) | |
221 | chophere++; | |
222 | } | |
223 | tmpchar = *s; | |
224 | *s = '\0'; | |
225 | while (size) { | |
226 | size--; | |
227 | *d++ = ' '; | |
228 | } | |
229 | size = s - t; | |
230 | Copy(t,d,size,char); | |
231 | d += size; | |
232 | *s = tmpchar; | |
233 | if (fcmd->f_flags & FC_CHOP) | |
234 | str_chop(str,chophere); | |
235 | break; | |
236 | case F_CENTER: { | |
237 | int halfsize; | |
238 | ||
239 | (void)eval(fcmd->f_expr,G_SCALAR,sp); | |
240 | str = stack->ary_array[sp+1]; | |
241 | t = s = str_get(str); | |
242 | size = fcmd->f_size; | |
243 | CHKLEN(size); | |
244 | chophere = Nullch; | |
245 | while (size && *s && *s != '\n') { | |
246 | if (*s == '\t') | |
247 | *s = ' '; | |
248 | size--; | |
249 | if (*s && index(chopset,*s++)) | |
250 | chophere = s; | |
251 | if (*s == '\n' && (fcmd->f_flags & FC_CHOP)) | |
252 | *s = ' '; | |
253 | } | |
254 | if (size || !*s) | |
255 | chophere = s; | |
256 | else if (chophere && chophere < s && *s && index(chopset,*s)) | |
257 | chophere = s; | |
258 | if (fcmd->f_flags & FC_CHOP) { | |
259 | if (!chophere) | |
260 | chophere = s; | |
261 | size += (s - chophere); | |
262 | s = chophere; | |
263 | while (*chophere && index(chopset,*chophere) | |
264 | && isSPACE(*chophere)) | |
265 | chophere++; | |
266 | } | |
267 | tmpchar = *s; | |
268 | *s = '\0'; | |
269 | halfsize = size / 2; | |
270 | while (size > halfsize) { | |
271 | size--; | |
272 | *d++ = ' '; | |
273 | } | |
274 | size = s - t; | |
275 | Copy(t,d,size,char); | |
276 | d += size; | |
277 | *s = tmpchar; | |
278 | if (fcmd->f_next && fcmd->f_next->f_pre[0] == '\n') | |
279 | size = 0; /* no spaces before newline */ | |
280 | else | |
281 | size = halfsize; | |
282 | while (size) { | |
283 | size--; | |
284 | *d++ = ' '; | |
285 | } | |
286 | if (fcmd->f_flags & FC_CHOP) | |
287 | str_chop(str,chophere); | |
288 | break; | |
289 | } | |
290 | case F_LINES: | |
291 | (void)eval(fcmd->f_expr,G_SCALAR,sp); | |
292 | str = stack->ary_array[sp+1]; | |
293 | s = str_get(str); | |
294 | size = str_len(str); | |
295 | CHKLEN(size+1); | |
296 | orec->o_lines += countlines(s,size) - 1; | |
297 | Copy(s,d,size,char); | |
298 | d += size; | |
299 | if (size && s[size-1] != '\n') { | |
300 | *d++ = '\n'; | |
301 | orec->o_lines++; | |
302 | } | |
303 | linebeg = fcmd->f_next; | |
304 | break; | |
305 | case F_DECIMAL: { | |
306 | double value; | |
307 | ||
308 | (void)eval(fcmd->f_expr,G_SCALAR,sp); | |
309 | str = stack->ary_array[sp+1]; | |
310 | size = fcmd->f_size; | |
311 | CHKLEN(size+1); | |
312 | /* If the field is marked with ^ and the value is undefined, | |
313 | blank it out. */ | |
314 | if ((fcmd->f_flags & FC_CHOP) && !str->str_pok && !str->str_nok) { | |
315 | while (size) { | |
316 | size--; | |
317 | *d++ = ' '; | |
318 | } | |
319 | break; | |
320 | } | |
321 | value = str_gnum(str); | |
322 | if (fcmd->f_flags & FC_DP) { | |
323 | sprintf(d, "%#*.*f", size, fcmd->f_decimals, value); | |
324 | } else { | |
325 | sprintf(d, "%*.0f", size, value); | |
326 | } | |
327 | d += size; | |
328 | break; | |
329 | } | |
330 | } | |
331 | } | |
332 | CHKLEN(1); | |
333 | *d++ = '\0'; | |
334 | } | |
335 | ||
336 | static int | |
337 | countlines(s,size) | |
338 | register char *s; | |
339 | register int size; | |
340 | { | |
341 | register int count = 0; | |
342 | ||
343 | while (size--) { | |
344 | if (*s++ == '\n') | |
345 | count++; | |
346 | } | |
347 | return count; | |
348 | } | |
349 | ||
350 | void | |
351 | do_write(orec,stab,sp) | |
352 | struct outrec *orec; | |
353 | STAB *stab; | |
354 | int sp; | |
355 | { | |
356 | register STIO *stio = stab_io(stab); | |
357 | FILE *ofp = stio->ofp; | |
358 | ||
359 | #ifdef DEBUGGING | |
360 | if (debug & 256) | |
361 | fprintf(stderr,"left=%ld, todo=%ld\n", | |
362 | (long)stio->lines_left, (long)orec->o_lines); | |
363 | #endif | |
364 | if (stio->lines_left < orec->o_lines) { | |
365 | if (!stio->top_stab) { | |
366 | STAB *topstab; | |
367 | char tmpbuf[256]; | |
368 | ||
369 | if (!stio->top_name) { | |
370 | if (!stio->fmt_name) | |
371 | stio->fmt_name = savestr(stab_name(stab)); | |
372 | sprintf(tmpbuf, "%s_TOP", stio->fmt_name); | |
373 | topstab = stabent(tmpbuf,FALSE); | |
374 | if (topstab && stab_form(topstab)) | |
375 | stio->top_name = savestr(tmpbuf); | |
376 | else | |
377 | stio->top_name = savestr("top"); | |
378 | } | |
379 | topstab = stabent(stio->top_name,FALSE); | |
380 | if (!topstab || !stab_form(topstab)) { | |
381 | stio->lines_left = 100000000; | |
382 | goto forget_top; | |
383 | } | |
384 | stio->top_stab = topstab; | |
385 | } | |
386 | if (stio->lines_left >= 0 && stio->page > 0) | |
387 | fwrite(formfeed->str_ptr, formfeed->str_cur, 1, ofp); | |
388 | stio->lines_left = stio->page_len; | |
389 | stio->page++; | |
390 | format(&toprec,stab_form(stio->top_stab),sp); | |
391 | fputs(toprec.o_str,ofp); | |
392 | stio->lines_left -= toprec.o_lines; | |
393 | } | |
394 | forget_top: | |
395 | fputs(orec->o_str,ofp); | |
396 | stio->lines_left -= orec->o_lines; | |
397 | } |