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1 | /* $Header: form.c,v 3.0.1.3 90/10/15 17:26:24 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. |
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7 | * |
8 | * $Log: form.c,v $ |
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9 | * Revision 3.0.1.3 90/10/15 17:26:24 lwall |
10 | * patch29: added @###.## fields to format |
11 | * |
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12 | * Revision 3.0.1.2 90/08/09 03:38:40 lwall |
13 | * patch19: did preliminary work toward debugging packages and evals |
14 | * |
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15 | * Revision 3.0.1.1 90/02/28 17:39:34 lwall |
16 | * patch9: ... in format threw off subsequent field |
17 | * |
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18 | * Revision 3.0 89/10/18 15:17:26 lwall |
19 | * 3.0 baseline |
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20 | * |
21 | */ |
22 | |
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23 | #include "EXTERN.h" |
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24 | #include "perl.h" |
25 | |
26 | /* Forms stuff */ |
27 | |
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28 | void |
29 | form_parseargs(fcmd) |
30 | register FCMD *fcmd; |
31 | { |
32 | register int i; |
33 | register ARG *arg; |
34 | register int items; |
35 | STR *str; |
36 | ARG *parselist(); |
154e51a4 |
37 | line_t oldline = curcmd->c_line; |
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38 | int oldsave = savestack->ary_fill; |
39 | |
40 | str = fcmd->f_unparsed; |
154e51a4 |
41 | curcmd->c_line = fcmd->f_line; |
a687059c |
42 | fcmd->f_unparsed = Nullstr; |
43 | (void)savehptr(&curstash); |
44 | curstash = str->str_u.str_hash; |
45 | arg = parselist(str); |
46 | restorelist(oldsave); |
47 | |
48 | items = arg->arg_len - 1; /* ignore $$ on end */ |
49 | for (i = 1; i <= items; i++) { |
50 | if (!fcmd || fcmd->f_type == F_NULL) |
51 | fatal("Too many field values"); |
52 | dehoist(arg,i); |
53 | fcmd->f_expr = make_op(O_ITEM,1, |
54 | arg[i].arg_ptr.arg_arg,Nullarg,Nullarg); |
55 | if (fcmd->f_flags & FC_CHOP) { |
56 | if ((fcmd->f_expr[1].arg_type & A_MASK) == A_STAB) |
57 | fcmd->f_expr[1].arg_type = A_LVAL; |
58 | else if ((fcmd->f_expr[1].arg_type & A_MASK) == A_EXPR) |
59 | fcmd->f_expr[1].arg_type = A_LEXPR; |
60 | else |
61 | fatal("^ field requires scalar lvalue"); |
62 | } |
63 | fcmd = fcmd->f_next; |
64 | } |
65 | if (fcmd && fcmd->f_type) |
66 | fatal("Not enough field values"); |
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67 | curcmd->c_line = oldline; |
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68 | Safefree(arg); |
69 | str_free(str); |
70 | } |
71 | |
72 | int newsize; |
73 | |
8d063cd8 |
74 | #define CHKLEN(allow) \ |
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75 | newsize = (d - orec->o_str) + (allow); \ |
76 | if (newsize >= curlen) { \ |
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77 | curlen = d - orec->o_str; \ |
78 | GROWSTR(&orec->o_str,&orec->o_len,orec->o_len + (allow)); \ |
79 | d = orec->o_str + curlen; /* in case it moves */ \ |
80 | curlen = orec->o_len - 2; \ |
81 | } |
82 | |
a687059c |
83 | format(orec,fcmd,sp) |
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84 | register struct outrec *orec; |
85 | register FCMD *fcmd; |
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86 | int sp; |
8d063cd8 |
87 | { |
88 | register char *d = orec->o_str; |
89 | register char *s; |
90 | register int curlen = orec->o_len - 2; |
91 | register int size; |
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92 | FCMD *nextfcmd; |
93 | FCMD *linebeg = fcmd; |
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94 | char tmpchar; |
95 | char *t; |
96 | CMD mycmd; |
97 | STR *str; |
98 | char *chophere; |
99 | |
100 | mycmd.c_type = C_NULL; |
101 | orec->o_lines = 0; |
a687059c |
102 | for (; fcmd; fcmd = nextfcmd) { |
103 | nextfcmd = fcmd->f_next; |
8d063cd8 |
104 | CHKLEN(fcmd->f_presize); |
a687059c |
105 | if (s = fcmd->f_pre) { |
106 | while (*s) { |
107 | if (*s == '\n') { |
108 | while (d > orec->o_str && (d[-1] == ' ' || d[-1] == '\t')) |
109 | d--; |
110 | if (fcmd->f_flags & FC_NOBLANK) { |
111 | if (d == orec->o_str || d[-1] == '\n') { |
112 | orec->o_lines--; /* don't print blank line */ |
113 | linebeg = fcmd->f_next; |
114 | break; |
115 | } |
116 | else if (fcmd->f_flags & FC_REPEAT) |
117 | nextfcmd = linebeg; |
118 | } |
119 | else |
120 | linebeg = fcmd->f_next; |
8d063cd8 |
121 | } |
a687059c |
122 | *d++ = *s++; |
8d063cd8 |
123 | } |
8d063cd8 |
124 | } |
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125 | if (fcmd->f_unparsed) |
126 | form_parseargs(fcmd); |
8d063cd8 |
127 | switch (fcmd->f_type) { |
128 | case F_NULL: |
129 | orec->o_lines++; |
130 | break; |
131 | case F_LEFT: |
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132 | (void)eval(fcmd->f_expr,G_SCALAR,sp); |
133 | str = stack->ary_array[sp+1]; |
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134 | s = str_get(str); |
135 | size = fcmd->f_size; |
136 | CHKLEN(size); |
137 | chophere = Nullch; |
138 | while (size && *s && *s != '\n') { |
a687059c |
139 | if (*s == '\t') |
140 | *s = ' '; |
8d063cd8 |
141 | size--; |
a687059c |
142 | if (*s && index(chopset,(*d++ = *s++))) |
8d063cd8 |
143 | chophere = s; |
a687059c |
144 | if (*s == '\n' && (fcmd->f_flags & FC_CHOP)) |
145 | *s = ' '; |
8d063cd8 |
146 | } |
147 | if (size) |
148 | chophere = s; |
a687059c |
149 | else if (chophere && chophere < s && *s && index(chopset,*s)) |
150 | chophere = s; |
8d063cd8 |
151 | if (fcmd->f_flags & FC_CHOP) { |
152 | if (!chophere) |
153 | chophere = s; |
154 | size += (s - chophere); |
155 | d -= (s - chophere); |
156 | if (fcmd->f_flags & FC_MORE && |
157 | *chophere && strNE(chophere,"\n")) { |
158 | while (size < 3) { |
159 | d--; |
160 | size++; |
161 | } |
162 | while (d[-1] == ' ' && size < fcmd->f_size) { |
163 | d--; |
164 | size++; |
165 | } |
166 | *d++ = '.'; |
167 | *d++ = '.'; |
168 | *d++ = '.'; |
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169 | size -= 3; |
8d063cd8 |
170 | } |
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171 | while (*chophere && index(chopset,*chophere)) |
172 | chophere++; |
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173 | str_chop(str,chophere); |
174 | } |
175 | if (fcmd->f_next && fcmd->f_next->f_pre[0] == '\n') |
176 | size = 0; /* no spaces before newline */ |
177 | while (size) { |
178 | size--; |
179 | *d++ = ' '; |
180 | } |
181 | break; |
182 | case F_RIGHT: |
a687059c |
183 | (void)eval(fcmd->f_expr,G_SCALAR,sp); |
184 | str = stack->ary_array[sp+1]; |
185 | t = s = str_get(str); |
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186 | size = fcmd->f_size; |
187 | CHKLEN(size); |
188 | chophere = Nullch; |
189 | while (size && *s && *s != '\n') { |
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190 | if (*s == '\t') |
191 | *s = ' '; |
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192 | size--; |
a687059c |
193 | if (*s && index(chopset,*s++)) |
194 | chophere = s; |
195 | if (*s == '\n' && (fcmd->f_flags & FC_CHOP)) |
196 | *s = ' '; |
8d063cd8 |
197 | } |
198 | if (size) |
199 | chophere = s; |
a687059c |
200 | else if (chophere && chophere < s && *s && index(chopset,*s)) |
201 | chophere = s; |
8d063cd8 |
202 | if (fcmd->f_flags & FC_CHOP) { |
203 | if (!chophere) |
204 | chophere = s; |
205 | size += (s - chophere); |
8d063cd8 |
206 | s = chophere; |
a687059c |
207 | while (*chophere && index(chopset,*chophere)) |
208 | chophere++; |
8d063cd8 |
209 | } |
210 | tmpchar = *s; |
211 | *s = '\0'; |
212 | while (size) { |
213 | size--; |
214 | *d++ = ' '; |
215 | } |
216 | size = s - t; |
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217 | (void)bcopy(t,d,size); |
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218 | d += size; |
219 | *s = tmpchar; |
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220 | if (fcmd->f_flags & FC_CHOP) |
221 | str_chop(str,chophere); |
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222 | break; |
223 | case F_CENTER: { |
224 | int halfsize; |
225 | |
a687059c |
226 | (void)eval(fcmd->f_expr,G_SCALAR,sp); |
227 | str = stack->ary_array[sp+1]; |
228 | t = s = str_get(str); |
8d063cd8 |
229 | size = fcmd->f_size; |
230 | CHKLEN(size); |
231 | chophere = Nullch; |
232 | while (size && *s && *s != '\n') { |
a687059c |
233 | if (*s == '\t') |
234 | *s = ' '; |
8d063cd8 |
235 | size--; |
a687059c |
236 | if (*s && index(chopset,*s++)) |
237 | chophere = s; |
238 | if (*s == '\n' && (fcmd->f_flags & FC_CHOP)) |
239 | *s = ' '; |
8d063cd8 |
240 | } |
241 | if (size) |
242 | chophere = s; |
a687059c |
243 | else if (chophere && chophere < s && *s && index(chopset,*s)) |
244 | chophere = s; |
8d063cd8 |
245 | if (fcmd->f_flags & FC_CHOP) { |
246 | if (!chophere) |
247 | chophere = s; |
248 | size += (s - chophere); |
8d063cd8 |
249 | s = chophere; |
a687059c |
250 | while (*chophere && index(chopset,*chophere)) |
251 | chophere++; |
8d063cd8 |
252 | } |
253 | tmpchar = *s; |
254 | *s = '\0'; |
255 | halfsize = size / 2; |
256 | while (size > halfsize) { |
257 | size--; |
258 | *d++ = ' '; |
259 | } |
260 | size = s - t; |
a687059c |
261 | (void)bcopy(t,d,size); |
8d063cd8 |
262 | d += size; |
263 | *s = tmpchar; |
264 | if (fcmd->f_next && fcmd->f_next->f_pre[0] == '\n') |
265 | size = 0; /* no spaces before newline */ |
266 | else |
267 | size = halfsize; |
268 | while (size) { |
269 | size--; |
270 | *d++ = ' '; |
271 | } |
a687059c |
272 | if (fcmd->f_flags & FC_CHOP) |
273 | str_chop(str,chophere); |
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274 | break; |
275 | } |
276 | case F_LINES: |
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277 | (void)eval(fcmd->f_expr,G_SCALAR,sp); |
278 | str = stack->ary_array[sp+1]; |
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279 | s = str_get(str); |
280 | size = str_len(str); |
281 | CHKLEN(size); |
282 | orec->o_lines += countlines(s); |
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283 | (void)bcopy(s,d,size); |
8d063cd8 |
284 | d += size; |
a687059c |
285 | linebeg = fcmd->f_next; |
8d063cd8 |
286 | break; |
d9d8d8de |
287 | case F_DECIMAL: { |
288 | double value; |
289 | |
290 | (void)eval(fcmd->f_expr,G_SCALAR,sp); |
291 | str = stack->ary_array[sp+1]; |
292 | /* If the field is marked with ^ and the value is undefined, |
293 | blank it out. */ |
294 | if ((fcmd->f_flags & FC_CHOP) && !str->str_pok && !str->str_nok) { |
295 | while (size) { |
296 | size--; |
297 | *d++ = ' '; |
298 | } |
299 | break; |
300 | } |
301 | value = str_gnum(str); |
302 | size = fcmd->f_size; |
303 | CHKLEN(size); |
304 | if (fcmd->f_flags & FC_DP) { |
305 | sprintf(d, "%#*.*f", size, fcmd->f_decimals, value); |
306 | } else { |
307 | sprintf(d, "%*.0f", size, value); |
308 | } |
309 | d += size; |
310 | break; |
311 | } |
8d063cd8 |
312 | } |
313 | } |
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314 | CHKLEN(1); |
8d063cd8 |
315 | *d++ = '\0'; |
316 | } |
317 | |
318 | countlines(s) |
319 | register char *s; |
320 | { |
321 | register int count = 0; |
322 | |
323 | while (*s) { |
324 | if (*s++ == '\n') |
325 | count++; |
326 | } |
327 | return count; |
328 | } |
329 | |
a687059c |
330 | do_write(orec,stio,sp) |
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331 | struct outrec *orec; |
332 | register STIO *stio; |
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333 | int sp; |
8d063cd8 |
334 | { |
a687059c |
335 | FILE *ofp = stio->ofp; |
8d063cd8 |
336 | |
337 | #ifdef DEBUGGING |
338 | if (debug & 256) |
378cc40b |
339 | fprintf(stderr,"left=%ld, todo=%ld\n", |
340 | (long)stio->lines_left, (long)orec->o_lines); |
8d063cd8 |
341 | #endif |
342 | if (stio->lines_left < orec->o_lines) { |
343 | if (!stio->top_stab) { |
344 | STAB *topstab; |
345 | |
346 | if (!stio->top_name) |
347 | stio->top_name = savestr("top"); |
348 | topstab = stabent(stio->top_name,FALSE); |
a687059c |
349 | if (!topstab || !stab_form(topstab)) { |
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350 | stio->lines_left = 100000000; |
351 | goto forget_top; |
352 | } |
353 | stio->top_stab = topstab; |
354 | } |
a687059c |
355 | if (stio->lines_left >= 0 && stio->page > 0) |
356 | (void)putc('\f',ofp); |
8d063cd8 |
357 | stio->lines_left = stio->page_len; |
358 | stio->page++; |
a687059c |
359 | format(&toprec,stab_form(stio->top_stab),sp); |
8d063cd8 |
360 | fputs(toprec.o_str,ofp); |
361 | stio->lines_left -= toprec.o_lines; |
362 | } |
363 | forget_top: |
364 | fputs(orec->o_str,ofp); |
365 | stio->lines_left -= orec->o_lines; |
366 | } |