Commit | Line | Data |
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b803c326 | 1 | #ifndef lint |
8820cba9 | 2 | static char sccsid[] = "@(#)lib.c 4.4 %G%"; |
b803c326 | 3 | #endif |
b9bbf539 KM |
4 | |
5 | #include "stdio.h" | |
6 | #include "awk.def" | |
7 | #include "awk.h" | |
8 | #include "ctype.h" | |
9 | ||
10 | FILE *infile = NULL; | |
11 | char *file; | |
12 | #define RECSIZE (5 * 512) | |
13 | char record[RECSIZE]; | |
14 | char fields[RECSIZE]; | |
c48090b0 | 15 | char EMPTY[] = ""; |
b9bbf539 KM |
16 | |
17 | #define MAXFLD 100 | |
18 | int donefld; /* 1 = implies rec broken into fields */ | |
19 | int donerec; /* 1 = record is valid (no flds have changed) */ | |
20 | int mustfld; /* 1 = NF seen, so always break*/ | |
21 | ||
c48090b0 | 22 | #define FINIT {EMPTY, EMPTY, 0.0, FLD|STR} |
b9bbf539 KM |
23 | cell fldtab[MAXFLD] = { /*room for fields */ |
24 | { "$record", record, 0.0, STR|FLD}, | |
25 | FINIT, FINIT, FINIT, FINIT, FINIT, FINIT, FINIT, | |
26 | FINIT, FINIT, FINIT, FINIT, FINIT, FINIT, FINIT, | |
27 | FINIT, FINIT, FINIT, FINIT, FINIT, FINIT, FINIT, | |
28 | FINIT, FINIT, FINIT, FINIT, FINIT, FINIT, FINIT, | |
29 | FINIT, FINIT, FINIT, FINIT, FINIT, FINIT, FINIT, | |
30 | FINIT, FINIT, FINIT, FINIT, FINIT, FINIT, FINIT, | |
31 | FINIT, FINIT, FINIT, FINIT, FINIT, FINIT, FINIT | |
32 | }; | |
33 | int maxfld = 0; /* last used field */ | |
34 | ||
35 | ||
36 | getrec() | |
37 | { | |
38 | register char *rr; | |
39 | extern int svargc; | |
40 | extern char **svargv; | |
41 | register c, sep; | |
42 | ||
43 | dprintf("**RS=%o, **FS=%o\n", **RS, **FS, NULL); | |
44 | donefld = 0; | |
45 | donerec = 1; | |
46 | record[0] = 0; | |
47 | while (svargc > 0) { | |
48 | dprintf("svargc=%d, *svargv=%s\n", svargc, *svargv, NULL); | |
49 | if (infile == NULL) { /* have to open a new file */ | |
50 | if (member('=', *svargv)) { /* it's a var=value argument */ | |
51 | setclvar(*svargv); | |
52 | svargv++; | |
53 | svargc--; | |
54 | continue; | |
55 | } | |
56 | *FILENAME = file = *svargv; | |
57 | dprintf("opening file %s\n", file, NULL, NULL); | |
58 | if (*file == '-') | |
59 | infile = stdin; | |
60 | else if ((infile = fopen(file, "r")) == NULL) | |
61 | error(FATAL, "can't open %s", file); | |
62 | } | |
63 | if ((sep = **RS) == 0) | |
64 | sep = '\n'; | |
65 | for (rr = record; ; ) { | |
66 | for (; (c=getc(infile)) != sep && c != EOF; *rr++ = c) | |
67 | ; | |
68 | if (**RS == sep || c == EOF) | |
69 | break; | |
70 | if ((c = getc(infile)) == '\n' || c == EOF) /* 2 in a row */ | |
71 | break; | |
72 | *rr++ = '\n'; | |
73 | *rr++ = c; | |
74 | } | |
75 | if (rr > record+RECSIZE) | |
76 | error(FATAL, "record `%.20s...' too long", record); | |
77 | *rr = 0; | |
78 | if (mustfld) | |
79 | fldbld(); | |
80 | if (c != EOF || rr > record) { /* normal record */ | |
81 | recloc->tval &= ~NUM; | |
82 | recloc->tval |= STR; | |
83 | ++nrloc->fval; | |
84 | nrloc->tval &= ~STR; | |
85 | nrloc->tval |= NUM; | |
86 | return(1); | |
87 | } | |
88 | /* EOF arrived on this file; set up next */ | |
89 | if (infile != stdin) | |
90 | fclose(infile); | |
91 | infile = NULL; | |
92 | svargc--; | |
93 | svargv++; | |
94 | } | |
95 | return(0); /* true end of file */ | |
96 | } | |
97 | ||
98 | setclvar(s) /* set var=value from s */ | |
99 | char *s; | |
100 | { | |
101 | char *p; | |
102 | cell *q; | |
103 | ||
104 | for (p=s; *p != '='; p++) | |
105 | ; | |
106 | *p++ = 0; | |
107 | q = setsymtab(s, tostring(p), 0.0, STR, symtab); | |
108 | setsval(q, p); | |
109 | dprintf("command line set %s to |%s|\n", s, p, NULL); | |
110 | } | |
111 | ||
112 | fldbld() | |
113 | { | |
114 | register char *r, *fr, sep; | |
115 | int i, j; | |
116 | ||
117 | r = record; | |
118 | fr = fields; | |
119 | i = 0; /* number of fields accumulated here */ | |
120 | if ((sep = **FS) == ' ') | |
121 | for (i = 0; ; ) { | |
122 | while (*r == ' ' || *r == '\t' || *r == '\n') | |
123 | r++; | |
124 | if (*r == 0) | |
125 | break; | |
126 | i++; | |
127 | if (i >= MAXFLD) | |
128 | error(FATAL, "record `%.20s...' has too many fields", record); | |
129 | if (!(fldtab[i].tval&FLD)) | |
c48090b0 | 130 | strfree(fldtab[i].sval); |
b9bbf539 KM |
131 | fldtab[i].sval = fr; |
132 | fldtab[i].tval = FLD | STR; | |
133 | do | |
134 | *fr++ = *r++; | |
135 | while (*r != ' ' && *r != '\t' && *r != '\n' && *r != '\0'); | |
136 | *fr++ = 0; | |
137 | } | |
138 | else if (*r != 0) /* if 0, it's a null field */ | |
139 | for (;;) { | |
140 | i++; | |
141 | if (i >= MAXFLD) | |
142 | error(FATAL, "record `%.20s...' has too many fields", record); | |
143 | if (!(fldtab[i].tval&FLD)) | |
c48090b0 | 144 | strfree(fldtab[i].sval); |
b9bbf539 KM |
145 | fldtab[i].sval = fr; |
146 | fldtab[i].tval = FLD | STR; | |
147 | while (*r != sep && *r != '\n' && *r != '\0') /* \n always a separator */ | |
148 | *fr++ = *r++; | |
149 | *fr++ = 0; | |
150 | if (*r++ == 0) | |
151 | break; | |
152 | } | |
153 | *fr = 0; | |
154 | for (j=MAXFLD-1; j>i; j--) { /* clean out junk from previous record */ | |
155 | if (!(fldtab[j].tval&FLD)) | |
c48090b0 | 156 | strfree(fldtab[j].sval); |
b9bbf539 | 157 | fldtab[j].tval = STR | FLD; |
c48090b0 | 158 | fldtab[j].sval = EMPTY; |
b9bbf539 KM |
159 | } |
160 | maxfld = i; | |
161 | donefld = 1; | |
162 | for(i=1; i<=maxfld; i++) | |
163 | if(isnumber(fldtab[i].sval)) { | |
164 | fldtab[i].fval = atof(fldtab[i].sval); | |
165 | fldtab[i].tval |= NUM; | |
166 | } | |
167 | setfval(lookup("NF", symtab, 0), (awkfloat) maxfld); | |
168 | if (dbg) | |
169 | for (i = 0; i <= maxfld; i++) | |
170 | printf("field %d: |%s|\n", i, fldtab[i].sval); | |
171 | } | |
172 | ||
173 | recbld() | |
174 | { | |
175 | int i; | |
176 | register char *r, *p; | |
177 | ||
178 | if (donefld == 0 || donerec == 1) | |
179 | return; | |
180 | r = record; | |
181 | for (i = 1; i <= *NF; i++) { | |
182 | p = getsval(&fldtab[i]); | |
183 | while (*r++ = *p++) | |
184 | ; | |
185 | *(r-1) = **OFS; | |
186 | } | |
187 | *(r-1) = '\0'; | |
188 | dprintf("in recbld FS=%o, recloc=%o\n", **FS, recloc, NULL); | |
189 | recloc->tval = STR | FLD; | |
190 | dprintf("in recbld FS=%o, recloc=%o\n", **FS, recloc, NULL); | |
191 | if (r > record+RECSIZE) | |
192 | error(FATAL, "built giant record `%.20s...'", record); | |
193 | dprintf("recbld = |%s|\n", record, NULL, NULL); | |
194 | } | |
195 | ||
196 | cell *fieldadr(n) | |
197 | { | |
198 | if (n >= MAXFLD) | |
199 | error(FATAL, "trying to access field %d", n); | |
200 | return(&fldtab[n]); | |
201 | } | |
202 | ||
203 | int errorflag = 0; | |
204 | ||
205 | yyerror(s) char *s; { | |
206 | fprintf(stderr, "awk: %s near line %d\n", s, lineno); | |
207 | errorflag = 2; | |
208 | } | |
209 | ||
210 | error(f, s, a1, a2, a3, a4, a5, a6, a7) { | |
211 | fprintf(stderr, "awk: "); | |
212 | fprintf(stderr, s, a1, a2, a3, a4, a5, a6, a7); | |
213 | fprintf(stderr, "\n"); | |
8820cba9 | 214 | if (NR && *NR > 0) |
b9bbf539 KM |
215 | fprintf(stderr, " record number %g\n", *NR); |
216 | if (f) | |
217 | exit(2); | |
218 | } | |
219 | ||
220 | PUTS(s) char *s; { | |
221 | dprintf("%s\n", s, NULL, NULL); | |
222 | } | |
223 | ||
224 | #define MAXEXPON 38 /* maximum exponenet for fp number */ | |
225 | ||
226 | isnumber(s) | |
227 | register char *s; | |
228 | { | |
229 | register d1, d2; | |
230 | int point; | |
231 | char *es; | |
232 | ||
c48090b0 SL |
233 | if (s == NULL) |
234 | return (0); | |
b9bbf539 KM |
235 | d1 = d2 = point = 0; |
236 | while (*s == ' ' || *s == '\t' || *s == '\n') | |
237 | s++; | |
238 | if (*s == '\0') | |
239 | return(0); /* empty stuff isn't number */ | |
240 | if (*s == '+' || *s == '-') | |
241 | s++; | |
242 | if (!isdigit(*s) && *s != '.') | |
243 | return(0); | |
244 | if (isdigit(*s)) { | |
245 | do { | |
246 | d1++; | |
247 | s++; | |
248 | } while (isdigit(*s)); | |
249 | } | |
250 | if(d1 >= MAXEXPON) | |
251 | return(0); /* too many digits to convert */ | |
252 | if (*s == '.') { | |
253 | point++; | |
254 | s++; | |
255 | } | |
256 | if (isdigit(*s)) { | |
257 | d2++; | |
258 | do { | |
259 | s++; | |
260 | } while (isdigit(*s)); | |
261 | } | |
262 | if (!(d1 || point && d2)) | |
263 | return(0); | |
264 | if (*s == 'e' || *s == 'E') { | |
265 | s++; | |
266 | if (*s == '+' || *s == '-') | |
267 | s++; | |
268 | if (!isdigit(*s)) | |
269 | return(0); | |
270 | es = s; | |
271 | do { | |
272 | s++; | |
273 | } while (isdigit(*s)); | |
274 | if (s - es > 2) | |
275 | return(0); | |
276 | else if (s - es == 2 && 10 * (*es-'0') + *(es+1)-'0' >= MAXEXPON) | |
277 | return(0); | |
278 | } | |
279 | while (*s == ' ' || *s == '\t' || *s == '\n') | |
280 | s++; | |
281 | if (*s == '\0') | |
282 | return(1); | |
283 | else | |
284 | return(0); | |
285 | } | |
286 | /* | |
287 | isnumber(s) char *s; {return(0);} | |
288 | */ |