projects / unix-history / blame
| 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 | } |