Commit | Line | Data |
---|---|---|
55162a5a BJ |
1 | /* |
2 | * sequential formatted external routines | |
3 | */ | |
4 | ||
5 | #include "fio.h" | |
6 | ||
7 | /* | |
8 | * read sequential formatted external | |
9 | */ | |
10 | ||
11 | extern int rd_ed(),rd_ned(); | |
12 | int x_rnew(),x_getc(),x_tab(); | |
13 | ||
14 | s_rsfe(a) cilist *a; /* start */ | |
15 | { int n; | |
16 | reading = YES; | |
17 | if(n=c_sfe(a,READ)) return(n); | |
18 | if(curunit->uwrt) nowreading(curunit); | |
19 | getn= x_getc; | |
20 | doed= rd_ed; | |
21 | doned= rd_ned; | |
22 | donewrec = dorevert = doend = x_rnew; | |
23 | dotab = x_tab; | |
24 | if(pars_f(fmtbuf)) err(errflag,100,"read sfe") | |
25 | fmt_bg(); | |
26 | return(OK); | |
27 | } | |
28 | ||
29 | x_rnew() /* find next record */ | |
30 | { int ch; | |
31 | if(!curunit->uend) | |
32 | while((ch=getc(cf))!='\n' && ch!=EOF); | |
33 | cursor=recpos=reclen=0; | |
34 | return(OK); | |
35 | } | |
36 | ||
37 | x_getc() | |
38 | { int ch; | |
39 | if(curunit->uend) return(EOF); | |
40 | if((ch=getc(cf))!=EOF && ch!='\n') | |
41 | { recpos++; | |
42 | return(ch); | |
43 | } | |
44 | if(ch=='\n') | |
45 | { ungetc(ch,cf); | |
46 | return(ch); | |
47 | } | |
48 | if(feof(cf)) curunit->uend = YES; | |
49 | return(EOF); | |
50 | } | |
51 | ||
52 | e_rsfe() | |
53 | { int n; | |
54 | n=en_fio(); | |
55 | fmtbuf=NULL; | |
56 | return(n); | |
57 | } | |
58 | ||
59 | c_sfe(a,flag) cilist *a; /* check */ | |
60 | { unit *p; | |
61 | int n; | |
62 | external=sequential=formatted=FORMATTED; | |
63 | fmtbuf=a->cifmt; | |
64 | lfname = NULL; | |
65 | elist = NO; | |
66 | errflag = a->cierr; | |
67 | endflag = a->ciend; | |
68 | lunit = a->ciunit; | |
69 | if(not_legal(lunit)) err(errflag,101,"sfe"); | |
70 | curunit = p = &units[lunit]; | |
71 | if(!p->ufd && (n=fk_open(flag,SEQ,FMT,(ftnint)lunit)) ) | |
72 | err(errflag,n,"sfe") | |
73 | cf = curunit->ufd; | |
74 | elist = YES; | |
75 | lfname = curunit->ufnm; | |
76 | if(!p->ufmt) err(errflag,102,"sfe") | |
77 | if(p->url) err(errflag,105,"sfe") | |
78 | cursor=recpos=scale=reclen=0; | |
79 | radix = 10; | |
80 | signit = YES; | |
81 | cblank = curunit->ublnk; | |
82 | cplus = NO; | |
83 | return(OK); | |
84 | } | |
85 | ||
86 | /* | |
87 | * write sequential formatted external | |
88 | */ | |
89 | ||
90 | extern int w_ed(),w_ned(); | |
91 | int x_putc(),pr_put(),x_wend(),x_wnew(); | |
92 | ioflag new; | |
93 | ||
94 | s_wsfe(a) cilist *a; /*start*/ | |
95 | { int n; | |
96 | reading = NO; | |
97 | if(n=c_sfe(a,WRITE)) return(n); | |
98 | if(!curunit->uwrt) nowwriting(curunit); | |
99 | curunit->uend = NO; | |
100 | if (curunit->uprnt) putn = pr_put; | |
101 | else putn = x_putc; | |
102 | new = YES; | |
103 | doed= w_ed; | |
104 | doned= w_ned; | |
105 | doend = x_wend; | |
106 | dorevert = donewrec = x_wnew; | |
107 | dotab = x_tab; | |
108 | if(pars_f(fmtbuf)) err(errflag,100,"write sfe") | |
109 | fmt_bg(); | |
110 | return(OK); | |
111 | } | |
112 | ||
113 | x_putc(c) | |
114 | { | |
115 | if(c=='\n') recpos = reclen = cursor = 0; | |
116 | else recpos++; | |
117 | if (c) putc(c,cf); | |
118 | return(OK); | |
119 | } | |
120 | ||
121 | pr_put(c) | |
122 | { | |
123 | if(c=='\n') | |
124 | { new = YES; | |
125 | recpos = reclen = cursor = 0; | |
126 | } | |
127 | else if(new) | |
128 | { new = NO; | |
129 | if(c=='0') c = '\n'; | |
130 | else if(c=='1') c = '\f'; | |
131 | else return(OK); | |
132 | } | |
133 | else recpos++; | |
134 | if (c) putc(c,cf); | |
135 | return(OK); | |
136 | } | |
137 | ||
138 | x_tab() | |
139 | { int n; | |
140 | if(reclen < recpos) reclen = recpos; | |
141 | if(curunit->useek) | |
142 | { if((recpos+cursor) < 0) return(107); | |
143 | n = reclen - recpos; /* distance to eor, n>=0 */ | |
144 | if((cursor-n) > 0) | |
145 | { fseek(cf,(long)n,1); /* find current eor */ | |
146 | recpos = reclen; | |
147 | cursor -= n; | |
148 | } | |
149 | else | |
150 | { fseek(cf,(long)cursor,1); /* do not pass go */ | |
151 | recpos += cursor; | |
152 | return(cursor=0); | |
153 | } | |
154 | } | |
155 | else | |
156 | if(cursor < 0) return(120); /* cant go back */ | |
157 | while(cursor--) | |
158 | { if(reading) | |
159 | { n = (*getn)(); | |
160 | if(n=='\n') | |
161 | { (*ungetn)(n,cf); | |
162 | return(110); | |
163 | } | |
164 | if(n==EOF) return(EOF); | |
165 | } | |
166 | else (*putn)(' '); /* fill in the empty record */ | |
167 | } | |
168 | return(cursor=0); | |
169 | } | |
170 | ||
171 | x_wnew() | |
172 | { | |
173 | if(reclen>recpos) fseek(cf,(long)(reclen-recpos),1); | |
174 | return((*putn)('\n')); | |
175 | } | |
176 | ||
177 | x_wend(last) char last; | |
178 | { | |
179 | if(reclen>recpos) fseek(cf,(long)(reclen-recpos),1); | |
180 | return((*putn)(last)); | |
181 | } | |
182 | ||
183 | /* | |
184 | /*xw_rev() | |
185 | /*{ | |
186 | /* if(workdone) x_wSL(); | |
187 | /* return(workdone=0); | |
188 | /*} | |
189 | /* | |
190 | */ | |
191 | e_wsfe() | |
192 | { return(e_rsfe()); } |