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fe14fcc3 |
1 | /* $Header: form.c,v 4.0 91/03/20 01:19:23 lwall Locked $ |
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2 | * |
3 | * Copyright (c) 1989, Larry Wall |
4 | * |
5 | * You may distribute under the terms of the GNU General Public License |
6 | * as specified in the README file that comes with the perl 3.0 kit. |
8d063cd8 |
7 | * |
8 | * $Log: form.c,v $ |
fe14fcc3 |
9 | * Revision 4.0 91/03/20 01:19:23 lwall |
10 | * 4.0 baseline. |
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11 | * |
12 | */ |
13 | |
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14 | #include "EXTERN.h" |
8d063cd8 |
15 | #include "perl.h" |
16 | |
17 | /* Forms stuff */ |
18 | |
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19 | void |
20 | form_parseargs(fcmd) |
21 | register FCMD *fcmd; |
22 | { |
23 | register int i; |
24 | register ARG *arg; |
25 | register int items; |
26 | STR *str; |
27 | ARG *parselist(); |
154e51a4 |
28 | line_t oldline = curcmd->c_line; |
a687059c |
29 | int oldsave = savestack->ary_fill; |
30 | |
31 | str = fcmd->f_unparsed; |
154e51a4 |
32 | curcmd->c_line = fcmd->f_line; |
a687059c |
33 | fcmd->f_unparsed = Nullstr; |
34 | (void)savehptr(&curstash); |
35 | curstash = str->str_u.str_hash; |
36 | arg = parselist(str); |
37 | restorelist(oldsave); |
38 | |
39 | items = arg->arg_len - 1; /* ignore $$ on end */ |
40 | for (i = 1; i <= items; i++) { |
41 | if (!fcmd || fcmd->f_type == F_NULL) |
42 | fatal("Too many field values"); |
43 | dehoist(arg,i); |
44 | fcmd->f_expr = make_op(O_ITEM,1, |
45 | arg[i].arg_ptr.arg_arg,Nullarg,Nullarg); |
46 | if (fcmd->f_flags & FC_CHOP) { |
47 | if ((fcmd->f_expr[1].arg_type & A_MASK) == A_STAB) |
48 | fcmd->f_expr[1].arg_type = A_LVAL; |
49 | else if ((fcmd->f_expr[1].arg_type & A_MASK) == A_EXPR) |
50 | fcmd->f_expr[1].arg_type = A_LEXPR; |
51 | else |
52 | fatal("^ field requires scalar lvalue"); |
53 | } |
54 | fcmd = fcmd->f_next; |
55 | } |
56 | if (fcmd && fcmd->f_type) |
57 | fatal("Not enough field values"); |
154e51a4 |
58 | curcmd->c_line = oldline; |
a687059c |
59 | Safefree(arg); |
60 | str_free(str); |
61 | } |
62 | |
63 | int newsize; |
64 | |
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65 | #define CHKLEN(allow) \ |
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66 | newsize = (d - orec->o_str) + (allow); \ |
67 | if (newsize >= curlen) { \ |
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68 | curlen = d - orec->o_str; \ |
69 | GROWSTR(&orec->o_str,&orec->o_len,orec->o_len + (allow)); \ |
70 | d = orec->o_str + curlen; /* in case it moves */ \ |
71 | curlen = orec->o_len - 2; \ |
72 | } |
73 | |
a687059c |
74 | format(orec,fcmd,sp) |
8d063cd8 |
75 | register struct outrec *orec; |
76 | register FCMD *fcmd; |
a687059c |
77 | int sp; |
8d063cd8 |
78 | { |
79 | register char *d = orec->o_str; |
80 | register char *s; |
81 | register int curlen = orec->o_len - 2; |
82 | register int size; |
a687059c |
83 | FCMD *nextfcmd; |
84 | FCMD *linebeg = fcmd; |
8d063cd8 |
85 | char tmpchar; |
86 | char *t; |
87 | CMD mycmd; |
88 | STR *str; |
89 | char *chophere; |
90 | |
91 | mycmd.c_type = C_NULL; |
92 | orec->o_lines = 0; |
a687059c |
93 | for (; fcmd; fcmd = nextfcmd) { |
94 | nextfcmd = fcmd->f_next; |
8d063cd8 |
95 | CHKLEN(fcmd->f_presize); |
a687059c |
96 | if (s = fcmd->f_pre) { |
97 | while (*s) { |
98 | if (*s == '\n') { |
99 | while (d > orec->o_str && (d[-1] == ' ' || d[-1] == '\t')) |
100 | d--; |
101 | if (fcmd->f_flags & FC_NOBLANK) { |
102 | if (d == orec->o_str || d[-1] == '\n') { |
103 | orec->o_lines--; /* don't print blank line */ |
104 | linebeg = fcmd->f_next; |
105 | break; |
106 | } |
107 | else if (fcmd->f_flags & FC_REPEAT) |
108 | nextfcmd = linebeg; |
fe14fcc3 |
109 | else |
110 | linebeg = fcmd->f_next; |
a687059c |
111 | } |
112 | else |
113 | linebeg = fcmd->f_next; |
8d063cd8 |
114 | } |
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115 | *d++ = *s++; |
8d063cd8 |
116 | } |
8d063cd8 |
117 | } |
a687059c |
118 | if (fcmd->f_unparsed) |
119 | form_parseargs(fcmd); |
8d063cd8 |
120 | switch (fcmd->f_type) { |
121 | case F_NULL: |
122 | orec->o_lines++; |
123 | break; |
124 | case F_LEFT: |
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125 | (void)eval(fcmd->f_expr,G_SCALAR,sp); |
126 | str = stack->ary_array[sp+1]; |
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127 | s = str_get(str); |
128 | size = fcmd->f_size; |
129 | CHKLEN(size); |
130 | chophere = Nullch; |
131 | while (size && *s && *s != '\n') { |
a687059c |
132 | if (*s == '\t') |
133 | *s = ' '; |
8d063cd8 |
134 | size--; |
a687059c |
135 | if (*s && index(chopset,(*d++ = *s++))) |
8d063cd8 |
136 | chophere = s; |
a687059c |
137 | if (*s == '\n' && (fcmd->f_flags & FC_CHOP)) |
138 | *s = ' '; |
8d063cd8 |
139 | } |
140 | if (size) |
141 | chophere = s; |
a687059c |
142 | else if (chophere && chophere < s && *s && index(chopset,*s)) |
143 | chophere = s; |
8d063cd8 |
144 | if (fcmd->f_flags & FC_CHOP) { |
145 | if (!chophere) |
146 | chophere = s; |
147 | size += (s - chophere); |
148 | d -= (s - chophere); |
149 | if (fcmd->f_flags & FC_MORE && |
150 | *chophere && strNE(chophere,"\n")) { |
151 | while (size < 3) { |
152 | d--; |
153 | size++; |
154 | } |
155 | while (d[-1] == ' ' && size < fcmd->f_size) { |
156 | d--; |
157 | size++; |
158 | } |
159 | *d++ = '.'; |
160 | *d++ = '.'; |
161 | *d++ = '.'; |
ac58e20f |
162 | size -= 3; |
8d063cd8 |
163 | } |
a687059c |
164 | while (*chophere && index(chopset,*chophere)) |
165 | chophere++; |
8d063cd8 |
166 | str_chop(str,chophere); |
167 | } |
168 | if (fcmd->f_next && fcmd->f_next->f_pre[0] == '\n') |
169 | size = 0; /* no spaces before newline */ |
170 | while (size) { |
171 | size--; |
172 | *d++ = ' '; |
173 | } |
174 | break; |
175 | case F_RIGHT: |
a687059c |
176 | (void)eval(fcmd->f_expr,G_SCALAR,sp); |
177 | str = stack->ary_array[sp+1]; |
178 | t = s = str_get(str); |
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179 | size = fcmd->f_size; |
180 | CHKLEN(size); |
181 | chophere = Nullch; |
182 | while (size && *s && *s != '\n') { |
a687059c |
183 | if (*s == '\t') |
184 | *s = ' '; |
8d063cd8 |
185 | size--; |
a687059c |
186 | if (*s && index(chopset,*s++)) |
187 | chophere = s; |
188 | if (*s == '\n' && (fcmd->f_flags & FC_CHOP)) |
189 | *s = ' '; |
8d063cd8 |
190 | } |
191 | if (size) |
192 | chophere = s; |
a687059c |
193 | else if (chophere && chophere < s && *s && index(chopset,*s)) |
194 | chophere = s; |
8d063cd8 |
195 | if (fcmd->f_flags & FC_CHOP) { |
196 | if (!chophere) |
197 | chophere = s; |
198 | size += (s - chophere); |
8d063cd8 |
199 | s = chophere; |
a687059c |
200 | while (*chophere && index(chopset,*chophere)) |
201 | chophere++; |
8d063cd8 |
202 | } |
203 | tmpchar = *s; |
204 | *s = '\0'; |
205 | while (size) { |
206 | size--; |
207 | *d++ = ' '; |
208 | } |
209 | size = s - t; |
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210 | (void)bcopy(t,d,size); |
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211 | d += size; |
212 | *s = tmpchar; |
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213 | if (fcmd->f_flags & FC_CHOP) |
214 | str_chop(str,chophere); |
8d063cd8 |
215 | break; |
216 | case F_CENTER: { |
217 | int halfsize; |
218 | |
a687059c |
219 | (void)eval(fcmd->f_expr,G_SCALAR,sp); |
220 | str = stack->ary_array[sp+1]; |
221 | t = s = str_get(str); |
8d063cd8 |
222 | size = fcmd->f_size; |
223 | CHKLEN(size); |
224 | chophere = Nullch; |
225 | while (size && *s && *s != '\n') { |
a687059c |
226 | if (*s == '\t') |
227 | *s = ' '; |
8d063cd8 |
228 | size--; |
a687059c |
229 | if (*s && index(chopset,*s++)) |
230 | chophere = s; |
231 | if (*s == '\n' && (fcmd->f_flags & FC_CHOP)) |
232 | *s = ' '; |
8d063cd8 |
233 | } |
234 | if (size) |
235 | chophere = s; |
a687059c |
236 | else if (chophere && chophere < s && *s && index(chopset,*s)) |
237 | chophere = s; |
8d063cd8 |
238 | if (fcmd->f_flags & FC_CHOP) { |
239 | if (!chophere) |
240 | chophere = s; |
241 | size += (s - chophere); |
8d063cd8 |
242 | s = chophere; |
a687059c |
243 | while (*chophere && index(chopset,*chophere)) |
244 | chophere++; |
8d063cd8 |
245 | } |
246 | tmpchar = *s; |
247 | *s = '\0'; |
248 | halfsize = size / 2; |
249 | while (size > halfsize) { |
250 | size--; |
251 | *d++ = ' '; |
252 | } |
253 | size = s - t; |
a687059c |
254 | (void)bcopy(t,d,size); |
8d063cd8 |
255 | d += size; |
256 | *s = tmpchar; |
257 | if (fcmd->f_next && fcmd->f_next->f_pre[0] == '\n') |
258 | size = 0; /* no spaces before newline */ |
259 | else |
260 | size = halfsize; |
261 | while (size) { |
262 | size--; |
263 | *d++ = ' '; |
264 | } |
a687059c |
265 | if (fcmd->f_flags & FC_CHOP) |
266 | str_chop(str,chophere); |
8d063cd8 |
267 | break; |
268 | } |
269 | case F_LINES: |
a687059c |
270 | (void)eval(fcmd->f_expr,G_SCALAR,sp); |
271 | str = stack->ary_array[sp+1]; |
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272 | s = str_get(str); |
273 | size = str_len(str); |
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274 | CHKLEN(size+1); |
275 | orec->o_lines += countlines(s,size) - 1; |
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276 | (void)bcopy(s,d,size); |
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277 | d += size; |
c623bd54 |
278 | if (size && s[size-1] != '\n') { |
279 | *d++ = '\n'; |
280 | orec->o_lines++; |
281 | } |
a687059c |
282 | linebeg = fcmd->f_next; |
8d063cd8 |
283 | break; |
d9d8d8de |
284 | case F_DECIMAL: { |
285 | double value; |
286 | |
287 | (void)eval(fcmd->f_expr,G_SCALAR,sp); |
288 | str = stack->ary_array[sp+1]; |
c623bd54 |
289 | size = fcmd->f_size; |
290 | CHKLEN(size); |
d9d8d8de |
291 | /* If the field is marked with ^ and the value is undefined, |
292 | blank it out. */ |
293 | if ((fcmd->f_flags & FC_CHOP) && !str->str_pok && !str->str_nok) { |
294 | while (size) { |
295 | size--; |
296 | *d++ = ' '; |
297 | } |
298 | break; |
299 | } |
300 | value = str_gnum(str); |
d9d8d8de |
301 | if (fcmd->f_flags & FC_DP) { |
302 | sprintf(d, "%#*.*f", size, fcmd->f_decimals, value); |
303 | } else { |
304 | sprintf(d, "%*.0f", size, value); |
305 | } |
306 | d += size; |
307 | break; |
308 | } |
8d063cd8 |
309 | } |
310 | } |
154e51a4 |
311 | CHKLEN(1); |
8d063cd8 |
312 | *d++ = '\0'; |
313 | } |
314 | |
c623bd54 |
315 | countlines(s,size) |
8d063cd8 |
316 | register char *s; |
c623bd54 |
317 | register int size; |
8d063cd8 |
318 | { |
319 | register int count = 0; |
320 | |
c623bd54 |
321 | while (size--) { |
8d063cd8 |
322 | if (*s++ == '\n') |
323 | count++; |
324 | } |
325 | return count; |
326 | } |
327 | |
a687059c |
328 | do_write(orec,stio,sp) |
8d063cd8 |
329 | struct outrec *orec; |
330 | register STIO *stio; |
a687059c |
331 | int sp; |
8d063cd8 |
332 | { |
a687059c |
333 | FILE *ofp = stio->ofp; |
8d063cd8 |
334 | |
335 | #ifdef DEBUGGING |
336 | if (debug & 256) |
378cc40b |
337 | fprintf(stderr,"left=%ld, todo=%ld\n", |
338 | (long)stio->lines_left, (long)orec->o_lines); |
8d063cd8 |
339 | #endif |
340 | if (stio->lines_left < orec->o_lines) { |
341 | if (!stio->top_stab) { |
342 | STAB *topstab; |
343 | |
344 | if (!stio->top_name) |
345 | stio->top_name = savestr("top"); |
346 | topstab = stabent(stio->top_name,FALSE); |
a687059c |
347 | if (!topstab || !stab_form(topstab)) { |
8d063cd8 |
348 | stio->lines_left = 100000000; |
349 | goto forget_top; |
350 | } |
351 | stio->top_stab = topstab; |
352 | } |
a687059c |
353 | if (stio->lines_left >= 0 && stio->page > 0) |
354 | (void)putc('\f',ofp); |
8d063cd8 |
355 | stio->lines_left = stio->page_len; |
356 | stio->page++; |
a687059c |
357 | format(&toprec,stab_form(stio->top_stab),sp); |
8d063cd8 |
358 | fputs(toprec.o_str,ofp); |
359 | stio->lines_left -= toprec.o_lines; |
360 | } |
361 | forget_top: |
362 | fputs(orec->o_str,ofp); |
363 | stio->lines_left -= orec->o_lines; |
364 | } |