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1 | /*- |
2 | * %sccs.include.proprietary.c% | |
3 | */ | |
4 | ||
0804b2a5 | 5 | #ifndef lint |
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6 | static char sccsid[] = "@(#)1.form.c 4.3 (Berkeley) %G%"; |
7 | #endif /* not lint */ | |
0804b2a5 RH |
8 | |
9 | #include <stdio.h> | |
10 | #include "1.defs.h" | |
11 | #include "def.h" | |
a53b0533 KB |
12 | |
13 | /* | |
14 | * The following are used in <stdio.h> but are defines as constants | |
15 | * in 1.defs.h -- since their values are never used here we simply | |
16 | * discard them. XXX | |
17 | */ | |
18 | #undef _r | |
19 | #undef _p | |
20 | ||
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21 | extern int linechar, errflag, debug; |
22 | extern int (*input)(), (*unput)(); | |
23 | ||
24 | ||
25 | ||
26 | uptolow(c) /*translates upper to lower case */ | |
27 | int c; | |
28 | { | |
29 | if ('A' <= c && c <= 'Z') | |
30 | return(c+'a'-'A'); | |
31 | else | |
32 | return(c); | |
33 | } | |
34 | ||
35 | rdfree(func) | |
36 | int (*func)(); | |
37 | { | |
38 | int c; | |
39 | while ( (c = (*input)()) != '\n') | |
40 | { | |
41 | (*func)(c); | |
42 | } | |
43 | } | |
44 | ||
45 | rdstand(func) | |
46 | int (*func)(); | |
47 | { | |
48 | int c; | |
49 | while ( (c=(*input)()) != '\n') | |
50 | { | |
51 | (*func)(c); | |
52 | } | |
53 | } | |
54 | ||
55 | labfree(func) /* labels in freeform input */ | |
56 | int (*func)(); | |
57 | { | |
58 | int c; | |
59 | int temp[6]; | |
60 | int j; | |
61 | for (j = 0; j < 5; ++j) | |
62 | { | |
63 | while ( (c = (*input)()) == ' ' || c == '\t' ); | |
64 | if (c == '\n') | |
65 | { | |
66 | if (j != 0) | |
67 | { | |
68 | temp[j] = '\0'; | |
69 | error("label without code - ignored:","",""); | |
70 | } | |
71 | } | |
72 | if (c < '0' || c > '9') | |
73 | { | |
74 | (*unput)(c); | |
75 | break; | |
76 | } | |
77 | else | |
78 | { | |
79 | temp[j] = c; | |
80 | (*func)(c); | |
81 | } | |
82 | } | |
83 | for ( ; j < 5; ++j) | |
84 | (*func)(' '); | |
85 | } | |
86 | ||
87 | labstand(func) /* labels in standard form input */ | |
88 | int (*func)(); | |
89 | { | |
90 | int c; | |
91 | int j; | |
92 | ||
93 | for (j = 0; j < 5; ++j) | |
94 | { | |
95 | c = (*input)(); | |
96 | if (c == '\n') | |
97 | { | |
98 | error("line shorter than 5 characters","",""); | |
99 | errflag = 1; | |
100 | (*unput)('\n'); | |
101 | } | |
102 | if (c == '\t' || c == '\n') | |
103 | { | |
104 | for ( ;j<5; ++j) | |
105 | (*func)(' '); | |
106 | return; | |
107 | } | |
108 | (*func)(c); | |
109 | } | |
110 | (*input)(); /* throw away continuation char */ | |
111 | } | |
112 | ||
113 | ||
114 | ||
115 | contfree() /* identify continuation lines in free-form input */ | |
116 | { | |
117 | return(nonblchar(_diglet,0)); /* any non-alpha non-digit */ | |
118 | } | |
119 | ||
120 | ||
121 | nonblchar(class,yesno) | |
122 | int class,yesno; | |
123 | { | |
124 | #define CARDSIZE 121 | |
125 | int temp[CARDSIZE]; | |
126 | int j; | |
127 | for (j=0; (temp[j]=(*input)()) == ' ' || temp[j] == '\t'; ++j) | |
128 | if (j>=CARDSIZE-1) | |
129 | { | |
130 | temp[CARDSIZE-1] = '\0'; | |
131 | error ("line unexpectedly long","",""); | |
132 | break; | |
133 | } | |
134 | if (temp[j]!=EOF && classmatch(temp[j],class)==yesno) | |
135 | return(1); | |
136 | else | |
137 | { | |
138 | for ( ; j >= 0; --j) | |
139 | (*unput)(temp[j]); | |
140 | return(0); | |
141 | } | |
142 | } | |
143 | ||
144 | ||
145 | contstand() /* continuation lines in standard form input */ | |
146 | { | |
147 | int temp[6]; | |
148 | int i; | |
149 | ||
150 | for (i = 0; i < 6; ++i) | |
151 | { | |
152 | temp[i] = (*input)(); | |
153 | if (temp[i] == '\t' || temp[i] == '\n' || temp[i] == '\0' || temp[i] == EOF) | |
154 | { | |
155 | for ( ;i >= 0; --i) | |
156 | (*unput)(temp[i]); | |
157 | return(0); | |
158 | } | |
159 | } | |
160 | if (temp[5] != '0' && temp[5] != ' ') | |
161 | return(1); | |
162 | else | |
163 | { | |
164 | for ( i = 5 ; i >= 0; --i) | |
165 | (*unput)(temp[i]); | |
166 | return(0); | |
167 | } | |
168 | } | |
169 | ||
170 | ||
171 | ||
172 | comstand(posafter) /* standard form comments */ | |
173 | int posafter; | |
174 | { | |
175 | int c; | |
176 | c = (*input)(); | |
177 | if (!posafter) | |
178 | (*unput)(c); | |
179 | if (c == 'c' || c == '*' || c== '#') | |
180 | return(1); | |
181 | else | |
182 | return(0); | |
183 | } | |
184 | ||
185 | ||
186 | comfree(posafter) | |
187 | int posafter; | |
188 | { | |
189 | return(comstand(posafter)); | |
190 | } | |
191 | int (*rline[])() = {rdfree,rdstand}; | |
192 | int (*comment[])() = {comfree,comstand}; | |
193 | int (*getlabel[])() = {labfree, labstand}; | |
194 | int (*chkcont[])() = {contfree,contstand}; | |
195 | ||
196 | blankline() | |
197 | { | |
198 | if ( nonblchar(_nl,1) ) /* first non-blank is nl */ | |
199 | { | |
200 | (*unput) ('\n'); | |
201 | return(1); | |
202 | } | |
203 | else return(0); | |
204 | } | |
205 | ||
206 | #define maxunbp 80 | |
207 | char unbuf[maxunbp+1]; | |
208 | int unbp; | |
209 | ||
210 | empseek(linebeg) | |
211 | int linebeg; | |
212 | { | |
213 | unbp = 0; | |
214 | if (fseek(infd,(long)(linebeg+rtnbeg),0) == -1) | |
215 | faterr("in disk seek","",""); | |
216 | } | |
217 | ||
218 | inchar() | |
219 | { | |
220 | if (unbp > 0) | |
221 | return( unbuf[--unbp] ); | |
222 | else | |
223 | { | |
224 | return( uptolow(getc(infd)) ); | |
225 | } | |
226 | } | |
227 | ||
228 | ||
229 | unchar(c) | |
230 | int c; | |
231 | { | |
232 | if (unbp >= maxunbp) | |
233 | faterr("dec.rat: unbuf size exceeded","",""); | |
234 | if(c!=EOF)unbuf[unbp++] = c; | |
235 | } |