/* * 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 "lib9.h"#include "fmtdef.h" /* format the output into f->to and return the number of characters fmted */intdofmt(Fmt *f, char *fmt){ Rune rune, *rt, *rs; int r; char *t, *s; int n, nfmt; nfmt = f->nfmt; for(;;){ if(f->runes){ rt = f->to; rs = f->stop; while((r = *(uchar*)fmt) && r != '%'){ if(r < Runeself) fmt++; else{ fmt += chartorune(&rune, fmt); r = rune; } FMTRCHAR(f, rt, rs, r); } fmt++; f->nfmt += rt - (Rune *)f->to; f->to = rt; if(!r) return f->nfmt - nfmt; f->stop = rs; }else{ t = f->to; s = f->stop; while((r = *(uchar*)fmt) && r != '%'){ if(r < Runeself){ FMTCHAR(f, t, s, r); fmt++; }else{ n = chartorune(&rune, fmt); if(t + n > s){ t = _fmtflush(f, t, n); if(t != nil) s = f->stop; else return -1; } while(n--) *t++ = *fmt++; } } fmt++; f->nfmt += t - (char *)f->to; f->to = t; if(!r) return f->nfmt - nfmt; f->stop = s; } fmt = _fmtdispatch(f, fmt, 0); if(fmt == nil) return -1; } return 0; /* not reached */} void *_fmtflush(Fmt *f, void *t, int len){ if(f->runes) f->nfmt += (Rune*)t - (Rune*)f->to; else f->nfmt += (char*)t - (char *)f->to; f->to = t; if(f->flush == 0 || (*f->flush)(f) == 0 || (char*)f->to + len > (char*)f->stop){ f->stop = f->to; return nil; } return f->to;} /* * put a formatted block of memory sz bytes long of n runes into the output buffer, * left/right justified in a field of at least f->width charactes */int_fmtpad(Fmt *f, int n){ char *t, *s; int i; t = f->to; s = f->stop; for(i = 0; i < n; i++) FMTCHAR(f, t, s, ' '); f->nfmt += t - (char *)f->to; f->to = t; return 0;} int_rfmtpad(Fmt *f, int n){ Rune *t, *s; int i; t = f->to; s = f->stop; for(i = 0; i < n; i++) FMTRCHAR(f, t, s, ' '); f->nfmt += t - (Rune *)f->to; f->to = t; return 0;} int_fmtcpy(Fmt *f, void *vm, int n, int sz){ Rune *rt, *rs, r; char *t, *s, *m, *me; ulong fl; int nc, w; m = vm; me = m + sz; w = f->width; fl = f->flags; if((fl & FmtPrec) && n > f->prec) n = f->prec; if(f->runes){ if(!(fl & FmtLeft) && _rfmtpad(f, w - n) < 0) return -1; rt = f->to; rs = f->stop; for(nc = n; nc > 0; nc--){ r = *(uchar*)m; if(r < Runeself) m++; else if((me - m) >= UTFmax || fullrune(m, me-m)) m += chartorune(&r, m); else break; FMTRCHAR(f, rt, rs, r); } f->nfmt += rt - (Rune *)f->to; f->to = rt; if(m < me) return -1; if(fl & FmtLeft && _rfmtpad(f, w - n) < 0) return -1; }else{ if(!(fl & FmtLeft) && _fmtpad(f, w - n) < 0) return -1; t = f->to; s = f->stop; for(nc = n; nc > 0; nc--){ r = *(uchar*)m; if(r < Runeself) m++; else if((me - m) >= UTFmax || fullrune(m, me-m)) m += chartorune(&r, m); else break; FMTRUNE(f, t, s, r); } f->nfmt += t - (char *)f->to; f->to = t; if(fl & FmtLeft && _fmtpad(f, w - n) < 0) return -1; } return 0;} int_fmtrcpy(Fmt *f, void *vm, int n){ Rune r, *m, *me, *rt, *rs; char *t, *s; ulong fl; int w; m = vm; w = f->width; fl = f->flags; if((fl & FmtPrec) && n > f->prec) n = f->prec; if(f->runes){ if(!(fl & FmtLeft) && _rfmtpad(f, w - n) < 0) return -1; rt = f->to; rs = f->stop; for(me = m + n; m < me; m++) FMTRCHAR(f, rt, rs, *m); f->nfmt += rt - (Rune *)f->to; f->to = rt; if(fl & FmtLeft && _rfmtpad(f, w - n) < 0) return -1; }else{ if(!(fl & FmtLeft) && _fmtpad(f, w - n) < 0) return -1; t = f->to; s = f->stop; for(me = m + n; m < me; m++){ r = *m; FMTRUNE(f, t, s, r); } f->nfmt += t - (char *)f->to; f->to = t; if(fl & FmtLeft && _fmtpad(f, w - n) < 0) return -1; } return 0;} /* fmt out one character */int_charfmt(Fmt *f){ char x[1]; x[0] = va_arg(f->args, int); f->prec = 1; return _fmtcpy(f, x, 1, 1);} /* fmt out one rune */int_runefmt(Fmt *f){ Rune x[1]; x[0] = va_arg(f->args, int); return _fmtrcpy(f, x, 1);} /* public helper routine: fmt out a null terminated string already in hand */intfmtstrcpy(Fmt *f, char *s){ int p, i; if(!s) return _fmtcpy(f, "<nil>", 5, 5); /* if precision is specified, make sure we don't wander off the end */ if(f->flags & FmtPrec){ p = f->prec; for(i = 0; i < p; i++) if(s[i] == 0) break; return _fmtcpy(f, s, utfnlen(s, i), i); /* BUG?: won't print a partial rune at end */ } return _fmtcpy(f, s, utflen(s), strlen(s));} /* fmt out a null terminated utf string */int_strfmt(Fmt *f){ char *s; s = va_arg(f->args, char *); return fmtstrcpy(f, s);} /* public helper routine: fmt out a null terminated rune string already in hand */intfmtrunestrcpy(Fmt *f, Rune *s){ Rune *e; int n, p; if(!s) return _fmtcpy(f, "<nil>", 5, 5); /* if precision is specified, make sure we don't wander off the end */ if(f->flags & FmtPrec){ p = f->prec; for(n = 0; n < p; n++) if(s[n] == 0) break; }else{ for(e = s; *e; e++) ; n = e - s; } return _fmtrcpy(f, s, n);} /* fmt out a null terminated rune string */int_runesfmt(Fmt *f){ Rune *s; s = va_arg(f->args, Rune *); return fmtrunestrcpy(f, s);} /* fmt a % */int_percentfmt(Fmt *f){ Rune x[1]; x[0] = f->r; f->prec = 1; return _fmtrcpy(f, x, 1);} /* fmt an integer */int_ifmt(Fmt *f){ char buf[70], *p, *conv; uvlong vu; ulong u; int neg, base, i, n, fl, w, isv; neg = 0; fl = f->flags; isv = 0; vu = 0; u = 0; if(f->r == 'p'){ u = (ulong)va_arg(f->args, void*); f->r = 'x'; fl |= FmtUnsigned; }else if(fl & FmtVLong){ isv = 1; if(fl & FmtUnsigned) vu = va_arg(f->args, uvlong); else vu = va_arg(f->args, vlong); }else if(fl & FmtLong){ if(fl & FmtUnsigned) u = va_arg(f->args, ulong); else u = va_arg(f->args, long); }else if(fl & FmtByte){ if(fl & FmtUnsigned) u = (uchar)va_arg(f->args, int); else u = (char)va_arg(f->args, int); }else if(fl & FmtShort){ if(fl & FmtUnsigned) u = (ushort)va_arg(f->args, int); else u = (short)va_arg(f->args, int); }else{ if(fl & FmtUnsigned) u = va_arg(f->args, uint); else u = va_arg(f->args, int); } conv = "0123456789abcdef"; switch(f->r){ case 'd': base = 10; break; case 'x': base = 16; break; case 'X': base = 16; conv = "0123456789ABCDEF"; break; case 'b': base = 2; break; case 'o': base = 8; break; default: return -1; } if(!(fl & FmtUnsigned)){ if(isv && (vlong)vu < 0){ vu = -(vlong)vu; neg = 1; }else if(!isv && (long)u < 0){ u = -(long)u; neg = 1; } } p = buf + sizeof buf - 1; n = 0; if(isv){ while(vu){ i = vu % base; vu /= base; if((fl & FmtComma) && n % 4 == 3){ *p-- = ','; n++; } *p-- = conv[i]; n++; } }else{ while(u){ i = u % base; u /= base; if((fl & FmtComma) && n % 4 == 3){ *p-- = ','; n++; } *p-- = conv[i]; n++; } } if(n == 0){ *p-- = '0'; n = 1; } for(w = f->prec; n < w && p > buf+3; n++) *p-- = '0'; if(neg || (fl & (FmtSign|FmtSpace))) n++; if(fl & FmtSharp){ if(base == 16) n += 2; else if(base == 8){ if(p[1] == '0') fl &= ~FmtSharp; else n++; } } if((fl & FmtZero) && !(fl & FmtLeft)){ for(w = f->width; n < w && p > buf+3; n++) *p-- = '0'; f->width = 0; } if(fl & FmtSharp){ if(base == 16) *p-- = f->r; if(base == 16 || base == 8) *p-- = '0'; } if(neg) *p-- = '-'; else if(fl & FmtSign) *p-- = '+'; else if(fl & FmtSpace) *p-- = ' '; f->flags &= ~FmtPrec; return _fmtcpy(f, p + 1, n, n);} int_countfmt(Fmt *f){ void *p; ulong fl; fl = f->flags; p = va_arg(f->args, void*); if(fl & FmtVLong){ *(vlong*)p = f->nfmt; }else if(fl & FmtLong){ *(long*)p = f->nfmt; }else if(fl & FmtByte){ *(char*)p = f->nfmt; }else if(fl & FmtShort){ *(short*)p = f->nfmt; }else{ *(int*)p = f->nfmt; } return 0;} int_flagfmt(Fmt *f){ switch(f->r){ case ',': f->flags |= FmtComma; break; case '-': f->flags |= FmtLeft; break; case '+': f->flags |= FmtSign; break; case '#': f->flags |= FmtSharp; break; case ' ':Lines 1–500 of 532. 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/* * 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 "lib9.h" #include "fmtdef.h" /* format the output into f->to and return the number of characters fmted */ int dofmt(Fmt *f, char *fmt) { Rune rune, *rt, *rs; int r; char *t, *s; int n, nfmt; nfmt = f->nfmt; for(;;){ if(f->runes){ rt = f->to; rs = f->stop; while((r = *(uchar*)fmt) && r != '%'){ if(r < Runeself) fmt++; else{ fmt += chartorune(&rune, fmt); r = rune; } FMTRCHAR(f, rt, rs, r); } fmt++; f->nfmt += rt - (Rune *)f->to; f->to = rt; if(!r) return f->nfmt - nfmt; f->stop = rs; }else{ t = f->to; s = f->stop; while((r = *(uchar*)fmt) && r != '%'){ if(r < Runeself){ FMTCHAR(f, t, s, r); fmt++; }else{ n = chartorune(&rune, fmt); if(t + n > s){ t = _fmtflush(f, t, n); if(t != nil) s = f->stop; else return -1; } while(n--) *t++ = *fmt++; } } fmt++; f->nfmt += t - (char *)f->to; f->to = t; if(!r) return f->nfmt - nfmt; f->stop = s; } fmt = _fmtdispatch(f, fmt, 0); if(fmt == nil) return -1; } return 0; /* not reached */ } void * _fmtflush(Fmt *f, void *t, int len) { if(f->runes) f->nfmt += (Rune*)t - (Rune*)f->to; else f->nfmt += (char*)t - (char *)f->to; f->to = t; if(f->flush == 0 || (*f->flush)(f) == 0 || (char*)f->to + len > (char*)f->stop){ f->stop = f->to; return nil; } return f->to; } /* * put a formatted block of memory sz bytes long of n runes into the output buffer, * left/right justified in a field of at least f->width charactes */ int _fmtpad(Fmt *f, int n) { char *t, *s; int i; t = f->to; s = f->stop; for(i = 0; i < n; i++) FMTCHAR(f, t, s, ' '); f->nfmt += t - (char *)f->to; f->to = t; return 0; } int _rfmtpad(Fmt *f, int n) { Rune *t, *s; int i; t = f->to; s = f->stop; for(i = 0; i < n; i++) FMTRCHAR(f, t, s, ' '); f->nfmt += t - (Rune *)f->to; f->to = t; return 0; } int _fmtcpy(Fmt *f, void *vm, int n, int sz) { Rune *rt, *rs, r; char *t, *s, *m, *me; ulong fl; int nc, w; m = vm; me = m + sz; w = f->width; fl = f->flags; if((fl & FmtPrec) && n > f->prec) n = f->prec; if(f->runes){ if(!(fl & FmtLeft) && _rfmtpad(f, w - n) < 0) return -1; rt = f->to; rs = f->stop; for(nc = n; nc > 0; nc--){ r = *(uchar*)m; if(r < Runeself) m++; else if((me - m) >= UTFmax || fullrune(m, me-m)) m += chartorune(&r, m); else break; FMTRCHAR(f, rt, rs, r); } f->nfmt += rt - (Rune *)f->to; f->to = rt; if(m < me) return -1; if(fl & FmtLeft && _rfmtpad(f, w - n) < 0) return -1; }else{ if(!(fl & FmtLeft) && _fmtpad(f, w - n) < 0) return -1; t = f->to; s = f->stop; for(nc = n; nc > 0; nc--){ r = *(uchar*)m; if(r < Runeself) m++; else if((me - m) >= UTFmax || fullrune(m, me-m)) m += chartorune(&r, m); else break; FMTRUNE(f, t, s, r); } f->nfmt += t - (char *)f->to; f->to = t; if(fl & FmtLeft && _fmtpad(f, w - n) < 0) return -1; } return 0; } int _fmtrcpy(Fmt *f, void *vm, int n) { Rune r, *m, *me, *rt, *rs; char *t, *s; ulong fl; int w; m = vm; w = f->width; fl = f->flags; if((fl & FmtPrec) && n > f->prec) n = f->prec; if(f->runes){ if(!(fl & FmtLeft) && _rfmtpad(f, w - n) < 0) return -1; rt = f->to; rs = f->stop; for(me = m + n; m < me; m++) FMTRCHAR(f, rt, rs, *m); f->nfmt += rt - (Rune *)f->to; f->to = rt; if(fl & FmtLeft && _rfmtpad(f, w - n) < 0) return -1; }else{ if(!(fl & FmtLeft) && _fmtpad(f, w - n) < 0) return -1; t = f->to; s = f->stop; for(me = m + n; m < me; m++){ r = *m; FMTRUNE(f, t, s, r); } f->nfmt += t - (char *)f->to; f->to = t; if(fl & FmtLeft && _fmtpad(f, w - n) < 0) return -1; } return 0; } /* fmt out one character */ int _charfmt(Fmt *f) { char x[1]; x[0] = va_arg(f->args, int); f->prec = 1; return _fmtcpy(f, x, 1, 1); } /* fmt out one rune */ int _runefmt(Fmt *f) { Rune x[1]; x[0] = va_arg(f->args, int); return _fmtrcpy(f, x, 1); } /* public helper routine: fmt out a null terminated string already in hand */ int fmtstrcpy(Fmt *f, char *s) { int p, i; if(!s) return _fmtcpy(f, "<nil>", 5, 5); /* if precision is specified, make sure we don't wander off the end */ if(f->flags & FmtPrec){ p = f->prec; for(i = 0; i < p; i++) if(s[i] == 0) break; return _fmtcpy(f, s, utfnlen(s, i), i); /* BUG?: won't print a partial rune at end */ } return _fmtcpy(f, s, utflen(s), strlen(s)); } /* fmt out a null terminated utf string */ int _strfmt(Fmt *f) { char *s; s = va_arg(f->args, char *); return fmtstrcpy(f, s); } /* public helper routine: fmt out a null terminated rune string already in hand */ int fmtrunestrcpy(Fmt *f, Rune *s) { Rune *e; int n, p; if(!s) return _fmtcpy(f, "<nil>", 5, 5); /* if precision is specified, make sure we don't wander off the end */ if(f->flags & FmtPrec){ p = f->prec; for(n = 0; n < p; n++) if(s[n] == 0) break; }else{ for(e = s; *e; e++) ; n = e - s; } return _fmtrcpy(f, s, n); } /* fmt out a null terminated rune string */ int _runesfmt(Fmt *f) { Rune *s; s = va_arg(f->args, Rune *); return fmtrunestrcpy(f, s); } /* fmt a % */ int _percentfmt(Fmt *f) { Rune x[1]; x[0] = f->r; f->prec = 1; return _fmtrcpy(f, x, 1); } /* fmt an integer */ int _ifmt(Fmt *f) { char buf[70], *p, *conv; uvlong vu; ulong u; int neg, base, i, n, fl, w, isv; neg = 0; fl = f->flags; isv = 0; vu = 0; u = 0; if(f->r == 'p'){ u = (ulong)va_arg(f->args, void*); f->r = 'x'; fl |= FmtUnsigned; }else if(fl & FmtVLong){ isv = 1; if(fl & FmtUnsigned) vu = va_arg(f->args, uvlong); else vu = va_arg(f->args, vlong); }else if(fl & FmtLong){ if(fl & FmtUnsigned) u = va_arg(f->args, ulong); else u = va_arg(f->args, long); }else if(fl & FmtByte){ if(fl & FmtUnsigned) u = (uchar)va_arg(f->args, int); else u = (char)va_arg(f->args, int); }else if(fl & FmtShort){ if(fl & FmtUnsigned) u = (ushort)va_arg(f->args, int); else u = (short)va_arg(f->args, int); }else{ if(fl & FmtUnsigned) u = va_arg(f->args, uint); else u = va_arg(f->args, int); } conv = "0123456789abcdef"; switch(f->r){ case 'd': base = 10; break; case 'x': base = 16; break; case 'X': base = 16; conv = "0123456789ABCDEF"; break; case 'b': base = 2; break; case 'o': base = 8; break; default: return -1; } if(!(fl & FmtUnsigned)){ if(isv && (vlong)vu < 0){ vu = -(vlong)vu; neg = 1; }else if(!isv && (long)u < 0){ u = -(long)u; neg = 1; } } p = buf + sizeof buf - 1; n = 0; if(isv){ while(vu){ i = vu % base; vu /= base; if((fl & FmtComma) && n % 4 == 3){ *p-- = ','; n++; } *p-- = conv[i]; n++; } }else{ while(u){ i = u % base; u /= base; if((fl & FmtComma) && n % 4 == 3){ *p-- = ','; n++; } *p-- = conv[i]; n++; } } if(n == 0){ *p-- = '0'; n = 1; } for(w = f->prec; n < w && p > buf+3; n++) *p-- = '0'; if(neg || (fl & (FmtSign|FmtSpace))) n++; if(fl & FmtSharp){ if(base == 16) n += 2; else if(base == 8){ if(p[1] == '0') fl &= ~FmtSharp; else n++; } } if((fl & FmtZero) && !(fl & FmtLeft)){ for(w = f->width; n < w && p > buf+3; n++) *p-- = '0'; f->width = 0; } if(fl & FmtSharp){ if(base == 16) *p-- = f->r; if(base == 16 || base == 8) *p-- = '0'; } if(neg) *p-- = '-'; else if(fl & FmtSign) *p-- = '+'; else if(fl & FmtSpace) *p-- = ' '; f->flags &= ~FmtPrec; return _fmtcpy(f, p + 1, n, n); } int _countfmt(Fmt *f) { void *p; ulong fl; fl = f->flags; p = va_arg(f->args, void*); if(fl & FmtVLong){ *(vlong*)p = f->nfmt; }else if(fl & FmtLong){ *(long*)p = f->nfmt; }else if(fl & FmtByte){ *(char*)p = f->nfmt; }else if(fl & FmtShort){ *(short*)p = f->nfmt; }else{ *(int*)p = f->nfmt; } return 0; } int _flagfmt(Fmt *f) { switch(f->r){ case ',': f->flags |= FmtComma; break; case '-': f->flags |= FmtLeft; break; case '+': f->flags |= FmtSign; break; case '#': f->flags |= FmtSharp; break; case ' ':