Commit | Line | Data |
---|---|---|
964735c9 BJ |
1 | # |
2 | /* | |
3 | * | |
4 | * UNIX debugger | |
5 | * | |
6 | */ | |
7 | ||
8 | #include "defs.h" | |
9 | static char sccsid[] = "@(#)input.c 4.1 %G%"; | |
10 | ||
11 | INT mkfault; | |
12 | CHAR line[LINSIZ]; | |
13 | INT infile; | |
14 | CHAR *lp; | |
15 | CHAR peekc,lastc = EOR; | |
16 | INT eof; | |
17 | ||
18 | /* input routines */ | |
19 | ||
20 | eol(c) | |
21 | CHAR c; | |
22 | { | |
23 | return(c==EOR ORF c==';'); | |
24 | } | |
25 | ||
26 | rdc() | |
27 | { REP readchar(); | |
28 | PER lastc==SP ORF lastc==TB | |
29 | DONE | |
30 | return(lastc); | |
31 | } | |
32 | ||
33 | readchar() | |
34 | { | |
35 | IF eof | |
36 | THEN lastc=0; | |
37 | ELSE IF lp==0 | |
38 | THEN lp=line; | |
39 | REP eof = read(infile,lp,1)==0; | |
40 | IF mkfault THEN error(0); FI | |
41 | PER eof==0 ANDF *lp++!=EOR DONE | |
42 | *lp=0; lp=line; | |
43 | FI | |
44 | IF lastc = peekc THEN peekc=0; | |
45 | ELIF lastc = *lp THEN lp++; | |
46 | FI | |
47 | FI | |
48 | return(lastc); | |
49 | } | |
50 | ||
51 | nextchar() | |
52 | { | |
53 | IF eol(rdc()) | |
54 | THEN lp--; return(0); | |
55 | ELSE return(lastc); | |
56 | FI | |
57 | } | |
58 | ||
59 | quotchar() | |
60 | { | |
61 | IF readchar()=='\\' | |
62 | THEN return(readchar()); | |
63 | ELIF lastc=='\'' | |
64 | THEN return(0); | |
65 | ELSE return(lastc); | |
66 | FI | |
67 | } | |
68 | ||
69 | getformat(deformat) | |
70 | STRING deformat; | |
71 | { | |
72 | REG STRING fptr; | |
73 | REG BOOL quote; | |
74 | fptr=deformat; quote=FALSE; | |
75 | WHILE (quote ? readchar()!=EOR : !eol(readchar())) | |
76 | DO IF (*fptr++ = lastc)=='"' | |
77 | THEN quote = ~quote; | |
78 | FI | |
79 | OD | |
80 | lp--; | |
81 | IF fptr!=deformat THEN *fptr++ = '\0'; FI | |
82 | } |