Commit | Line | Data |
---|---|---|
9d116dd7 | 1 | #include "EXTERN.h" |
864dbfa3 | 2 | #define PERL_IN_EBCDIC_C |
9d116dd7 JH |
3 | #include "perl.h" |
4 | ||
5 | /* in ASCII order, not that it matters */ | |
6 | static const char controllablechars[] = "?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"; | |
7 | ||
8 | int | |
9 | ebcdic_control(int ch) | |
10 | { | |
11 | if (ch > 'a') { | |
12 | char *ctlp; | |
13 | ||
14 | if (islower(ch)) | |
15 | ch = toupper(ch); | |
16 | ||
17 | if ((ctlp = strchr(controllablechars, ch)) == 0) { | |
cea2e8a9 | 18 | Perl_die(aTHX_ "unrecognised control character '%c'\n", ch); |
9d116dd7 JH |
19 | } |
20 | ||
21 | if (ctlp == controllablechars) | |
22 | return('\177'); /* DEL */ | |
23 | else | |
24 | return((unsigned char)(ctlp - controllablechars - 1)); | |
25 | } else { /* Want uncontrol */ | |
26 | if (ch == '\177' || ch == -1) | |
27 | return('?'); | |
da0838f1 PP |
28 | else if (ch == '\157') |
29 | return('\177'); | |
30 | else if (ch == '\174') | |
31 | return('\000'); | |
32 | else if (ch == '^') /* '\137' in 1047, '\260' in 819 */ | |
33 | return('\036'); | |
34 | else if (ch == '\155') | |
35 | return('\037'); | |
9d116dd7 JH |
36 | else if (0 < ch && ch < (sizeof(controllablechars) - 1)) |
37 | return(controllablechars[ch+1]); | |
38 | else | |
cea2e8a9 | 39 | Perl_die(aTHX_ "invalid control request: '\\%03o'\n", ch & 0xFF); |
9d116dd7 JH |
40 | } |
41 | } |