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Diffstat (limited to 'src/libfmt/fmtquote.c')
| -rw-r--r-- | src/libfmt/fmtquote.c | 262 |
1 files changed, 0 insertions, 262 deletions
diff --git a/src/libfmt/fmtquote.c b/src/libfmt/fmtquote.c deleted file mode 100644 index 9d5633d6..00000000 --- a/src/libfmt/fmtquote.c +++ /dev/null @@ -1,262 +0,0 @@ -/* - * The authors of this software are Rob Pike and Ken Thompson. - * Copyright (c) 2002 by Lucent Technologies. - * Permission to use, copy, modify, and distribute this software for any - * purpose without fee is hereby granted, provided that this entire notice - * is included in all copies of any software which is or includes a copy - * or modification of this software and in all copies of the supporting - * documentation for such software. - * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED - * WARRANTY. IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE ANY - * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY - * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE. - */ -#include <stdarg.h> -#include <string.h> -#include "utf.h" -#include "fmt.h" -#include "fmtdef.h" - -/* - * How many bytes of output UTF will be produced by quoting (if necessary) this string? - * How many runes? How much of the input will be consumed? - * The parameter q is filled in by __quotesetup. - * The string may be UTF or Runes (s or r). - * Return count does not include NUL. - * Terminate the scan at the first of: - * NUL in input - * count exceeded in input - * count exceeded on output - * *ninp is set to number of input bytes accepted. - * nin may be <0 initially, to avoid checking input by count. - */ -void -__quotesetup(char *s, Rune *r, int nin, int nout, Quoteinfo *q, int sharp, int runesout) -{ - int w; - Rune c; - - q->quoted = 0; - q->nbytesout = 0; - q->nrunesout = 0; - q->nbytesin = 0; - q->nrunesin = 0; - if(sharp || nin==0 || (s && *s=='\0') || (r && *r=='\0')){ - if(nout < 2) - return; - q->quoted = 1; - q->nbytesout = 2; - q->nrunesout = 2; - } - for(; nin!=0; nin-=w){ - if(s) - w = chartorune(&c, s); - else{ - c = *r; - w = runelen(c); - } - - if(c == '\0') - break; - if(runesout){ - if(q->nrunesout+1 > nout) - break; - }else{ - if(q->nbytesout+w > nout) - break; - } - - if((c <= L' ') || (c == L'\'') || (fmtdoquote!=nil && fmtdoquote(c))){ - if(!q->quoted){ - if(runesout){ - if(1+q->nrunesout+1+1 > nout) /* no room for quotes */ - break; - }else{ - if(1+q->nbytesout+w+1 > nout) /* no room for quotes */ - break; - } - q->nrunesout += 2; /* include quotes */ - q->nbytesout += 2; /* include quotes */ - q->quoted = 1; - } - if(c == '\'') { - if(runesout){ - if(1+q->nrunesout+1 > nout) /* no room for quotes */ - break; - }else{ - if(1+q->nbytesout+w > nout) /* no room for quotes */ - break; - } - q->nbytesout++; - q->nrunesout++; /* quotes reproduce as two characters */ - } - } - - /* advance input */ - if(s) - s += w; - else - r++; - q->nbytesin += w; - q->nrunesin++; - - /* advance output */ - q->nbytesout += w; - q->nrunesout++; - } -} - -static int -qstrfmt(char *sin, Rune *rin, Quoteinfo *q, Fmt *f) -{ - Rune r, *rm, *rme; - char *t, *s, *m, *me; - Rune *rt, *rs; - ulong fl; - int nc, w; - - m = sin; - me = m + q->nbytesin; - rm = rin; - rme = rm + q->nrunesin; - - w = f->width; - fl = f->flags; - if(f->runes){ - if(!(fl & FmtLeft) && __rfmtpad(f, w - q->nrunesout) < 0) - return -1; - }else{ - if(!(fl & FmtLeft) && __fmtpad(f, w - q->nbytesout) < 0) - return -1; - } - t = (char*)f->to; - s = (char*)f->stop; - rt = (Rune*)f->to; - rs = (Rune*)f->stop; - if(f->runes) - FMTRCHAR(f, rt, rs, '\''); - else - FMTRUNE(f, t, s, '\''); - for(nc = q->nrunesin; nc > 0; nc--){ - if(sin){ - r = *(uchar*)m; - if(r < Runeself) - m++; - else if((me - m) >= UTFmax || fullrune(m, me-m)) - m += chartorune(&r, m); - else - break; - }else{ - if(rm >= rme) - break; - r = *(uchar*)rm++; - } - if(f->runes){ - FMTRCHAR(f, rt, rs, r); - if(r == '\'') - FMTRCHAR(f, rt, rs, r); - }else{ - FMTRUNE(f, t, s, r); - if(r == '\'') - FMTRUNE(f, t, s, r); - } - } - - if(f->runes){ - FMTRCHAR(f, rt, rs, '\''); - USED(rs); - f->nfmt += rt - (Rune *)f->to; - f->to = rt; - if(fl & FmtLeft && __rfmtpad(f, w - q->nrunesout) < 0) - return -1; - }else{ - FMTRUNE(f, t, s, '\''); - USED(s); - f->nfmt += t - (char *)f->to; - f->to = t; - if(fl & FmtLeft && __fmtpad(f, w - q->nbytesout) < 0) - return -1; - } - return 0; -} - -int -__quotestrfmt(int runesin, Fmt *f) -{ - int outlen; - Rune *r; - char *s; - Quoteinfo q; - - f->flags &= ~FmtPrec; /* ignored for %q %Q, so disable for %s %S in easy case */ - if(runesin){ - r = va_arg(f->args, Rune *); - s = nil; - }else{ - s = va_arg(f->args, char *); - r = nil; - } - if(!s && !r) - return __fmtcpy(f, (void*)"<nil>", 5, 5); - - if(f->flush) - outlen = 0x7FFFFFFF; /* if we can flush, no output limit */ - else if(f->runes) - outlen = (Rune*)f->stop - (Rune*)f->to; - else - outlen = (char*)f->stop - (char*)f->to; - - __quotesetup(s, r, -1, outlen, &q, f->flags&FmtSharp, f->runes); -//print("bytes in %d bytes out %d runes in %d runesout %d\n", q.nbytesin, q.nbytesout, q.nrunesin, q.nrunesout); - - if(runesin){ - if(!q.quoted) - return __fmtrcpy(f, r, q.nrunesin); - return qstrfmt(nil, r, &q, f); - } - - if(!q.quoted) - return __fmtcpy(f, s, q.nrunesin, q.nbytesin); - return qstrfmt(s, nil, &q, f); -} - -int -quotestrfmt(Fmt *f) -{ - return __quotestrfmt(0, f); -} - -int -quoterunestrfmt(Fmt *f) -{ - return __quotestrfmt(1, f); -} - -void -quotefmtinstall(void) -{ - fmtinstall('q', quotestrfmt); - fmtinstall('Q', quoterunestrfmt); -} - -int -__needsquotes(char *s, int *quotelenp) -{ - Quoteinfo q; - - __quotesetup(s, nil, -1, 0x7FFFFFFF, &q, 0, 0); - *quotelenp = q.nbytesout; - - return q.quoted; -} - -int -__runeneedsquotes(Rune *r, int *quotelenp) -{ - Quoteinfo q; - - __quotesetup(nil, r, -1, 0x7FFFFFFF, &q, 0, 0); - *quotelenp = q.nrunesout; - - return q.quoted; -} |