Revision 14545,
1.2 KB
checked in by ghudson, 24 years ago
(diff) |
This commit was generated by cvs2svn to compensate for changes in r14544,
which included commits to RCS files with non-trunk default branches.
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[14544] | 1 | #include "EXTERN.h" |
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| 2 | #define PERL_IN_EBCDIC_C |
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| 3 | #include "perl.h" |
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| 4 | |
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| 5 | /* in ASCII order, not that it matters */ |
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| 6 | static const char controllablechars[] = "?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"; |
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| 7 | |
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| 8 | int |
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| 9 | ebcdic_control(int ch) |
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| 10 | { |
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| 11 | if (ch > 'a') { |
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| 12 | char *ctlp; |
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| 13 | |
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| 14 | if (islower(ch)) |
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| 15 | ch = toupper(ch); |
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| 16 | |
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| 17 | if ((ctlp = strchr(controllablechars, ch)) == 0) { |
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| 18 | Perl_die(aTHX_ "unrecognised control character '%c'\n", ch); |
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| 19 | } |
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| 20 | |
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| 21 | if (ctlp == controllablechars) |
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| 22 | return('\177'); /* DEL */ |
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| 23 | else |
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| 24 | return((unsigned char)(ctlp - controllablechars - 1)); |
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| 25 | } else { /* Want uncontrol */ |
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| 26 | if (ch == '\177' || ch == -1) |
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| 27 | return('?'); |
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| 28 | else if (ch == '\157') |
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| 29 | return('\177'); |
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| 30 | else if (ch == '\174') |
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| 31 | return('\000'); |
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| 32 | else if (ch == '^') /* '\137' in 1047, '\260' in 819 */ |
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| 33 | return('\036'); |
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| 34 | else if (ch == '\155') |
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| 35 | return('\037'); |
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| 36 | else if (0 < ch && ch < (sizeof(controllablechars) - 1)) |
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| 37 | return(controllablechars[ch+1]); |
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| 38 | else |
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| 39 | Perl_die(aTHX_ "invalid control request: '\\%03o'\n", ch & 0xFF); |
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| 40 | } |
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| 41 | } |
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