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Diffstat (limited to 'usr/src/lib/libast/common/sfio/sfvprintf.c')
-rw-r--r--usr/src/lib/libast/common/sfio/sfvprintf.c1377
1 files changed, 1377 insertions, 0 deletions
diff --git a/usr/src/lib/libast/common/sfio/sfvprintf.c b/usr/src/lib/libast/common/sfio/sfvprintf.c
new file mode 100644
index 0000000000..d73538e6fd
--- /dev/null
+++ b/usr/src/lib/libast/common/sfio/sfvprintf.c
@@ -0,0 +1,1377 @@
+/***********************************************************************
+* *
+* This software is part of the ast package *
+* Copyright (c) 1985-2007 AT&T Knowledge Ventures *
+* and is licensed under the *
+* Common Public License, Version 1.0 *
+* by AT&T Knowledge Ventures *
+* *
+* A copy of the License is available at *
+* http://www.opensource.org/licenses/cpl1.0.txt *
+* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
+* *
+* Information and Software Systems Research *
+* AT&T Research *
+* Florham Park NJ *
+* *
+* Glenn Fowler <gsf@research.att.com> *
+* David Korn <dgk@research.att.com> *
+* Phong Vo <kpv@research.att.com> *
+* *
+***********************************************************************/
+#include "sfhdr.h"
+
+/* The engine for formatting data.
+** 1. Argument positioning is done in sftable.c so any changes
+** made here should be reflected in sftable.c as well.
+** 2. For internationalization, Sfio only supports I/O of multibyte strings.
+** However, this code does provide minimal support so that Stdio functions
+** such as fwprintf/swprintf can be emulated (see stdvwprintf()).
+**
+** Written by Kiem-Phong Vo.
+*/
+#define HIGHBITI (~((~((uint)0)) >> 1))
+#define HIGHBITL (~((~((Sfulong_t)0)) >> 1))
+
+#define SFFMT_PREFIX (SFFMT_MINUS|SFFMT_SIGN|SFFMT_BLANK)
+
+#define FPRECIS 6 /* default precision for floats */
+
+#if _PACKAGE_ast
+#include <ccode.h>
+#else
+/* characters when using ebcdic or ascii */
+#if _chr_ebcdic
+#define CC_vt 013 /* vertical tab */
+#define CC_esc 047 /* escape */
+#define CC_bel 057 /* bell */
+#else
+#define CC_vt 013 /* vertical tab */
+#define CC_esc 033 /* escape */
+#define CC_bel 007 /* bell */
+#endif /* _chr_ebcdic */
+#endif /* _PACKAGE_ast */
+
+#if __STD_C
+static int chr2str(char* buf, int v)
+#else
+static int chr2str(buf, v)
+char* buf;
+int v;
+#endif
+{
+ if(isprint(v) && v != '\\')
+ { *buf++ = v;
+ return 1;
+ }
+ else
+ { *buf++ = '\\';
+ switch(v)
+ { case CC_bel: *buf++ = 'a'; return 2;
+ case CC_vt: *buf++ = 'v'; return 2;
+ case CC_esc: *buf++ = 'E'; return 2;
+ case '\b': *buf++ = 'b'; return 2;
+ case '\f': *buf++ = 'f'; return 2;
+ case '\n': *buf++ = 'n'; return 2;
+ case '\r': *buf++ = 'r'; return 2;
+ case '\t': *buf++ = 't'; return 2;
+ case '\\': *buf++ = '\\'; return 2;
+ default: *buf++ = '0' + ((v >> 6) & 03);
+ *buf++ = '0' + ((v >> 3) & 07);
+ *buf++ = '0' + ((v >> 0) & 07);
+ return 4;
+ }
+ }
+}
+
+/* On some platform(s), large functions are not compilable.
+** In such a case, the below macro should be defined non-zero so that
+** some in-lined macros will be made smaller, trading time for space.
+*/
+#if !defined(_sffmt_small) && defined(_UTS)
+#define _sffmt_small 1
+#endif
+
+#if __STD_C
+int sfvprintf(Sfio_t* f, const char* form, va_list args)
+#else
+int sfvprintf(f,form,args)
+Sfio_t* f; /* file to print to */
+char* form; /* format to use */
+va_list args; /* arg list if !argf */
+#endif
+{
+ int n, v, w, k, n_s, base, fmt, flags;
+ Sflong_t lv;
+ char *sp, *ssp, *endsp, *ep, *endep;
+ int dot, width, precis, sign, decpt;
+#if _PACKAGE_ast
+ int scale;
+#endif
+ ssize_t size;
+ Sfdouble_t dval;
+ char *tls[2], **ls; /* for %..[separ]s */
+ char* t_str; /* stuff between () */
+ ssize_t n_str; /* its length */
+
+ Argv_t argv; /* for extf to return value */
+ Sffmt_t *ft; /* format environment */
+ Fmt_t *fm, *fmstk; /* stack contexts */
+
+ char* oform; /* original format string */
+ va_list oargs; /* original arg list */
+ Fmtpos_t* fp; /* arg position list */
+ int argp, argn; /* arg position and number */
+
+#define SLACK 1024
+ char buf[SF_MAXDIGITS+SLACK], tmp[SF_MAXDIGITS+1], data[SF_GRAIN];
+ int decimal = 0, thousand = 0;
+
+#if _has_multibyte
+ wchar_t* wsp;
+ SFMBDCL(fmbs) /* state of format string */
+ SFMBDCL(mbs) /* state of some string */
+#ifdef mbwidth
+ char* osp;
+ int n_w, sf_wcwidth;
+#endif
+#endif
+
+ /* local io system */
+ int o, n_output;
+#define SMputc(f,c) { if((o = SFFLSBUF(f,c)) >= 0 ) n_output += 1; \
+ else { SFBUF(f); goto done; } \
+ }
+#define SMnputc(f,c,n) { if((o = SFNPUTC(f,c,n)) > 0 ) n_output += 1; \
+ if(o != n) { SFBUF(f); goto done; } \
+ }
+#define SMwrite(f,s,n) { if((o = SFWRITE(f,(Void_t*)s,n)) > 0 ) n_output += o; \
+ if(o != n) { SFBUF(f); goto done; } \
+ }
+#if _sffmt_small /* these macros are made smaller at some performance cost */
+#define SFBUF(f)
+#define SFINIT(f) (n_output = 0)
+#define SFEND(f)
+#define SFputc(f,c) SMputc(f,c)
+#define SFnputc(f,c,n) SMnputc(f,c,n)
+#define SFwrite(f,s,n) SMwrite(f,s,n)
+#else
+ uchar *d, *endd;
+#define SFBUF(f) (d = f->next, endd = f->endb)
+#define SFINIT(f) (SFBUF(f), n_output = 0)
+#define SFEND(f) ((n_output += d - f->next), (f->next = d))
+#define SFputc(f,c) { if(d < endd) { *d++ = (uchar)c; } \
+ else { SFEND(f); SMputc(f,c); SFBUF(f); } \
+ }
+#define SFnputc(f,c,n) { if(d+n <= endd) { while(n--) *d++ = (uchar)(c); } \
+ else { SFEND(f); SMnputc(f,c,n); SFBUF(f); } \
+ }
+#define SFwrite(f,s,n) { if(d+n <= endd) { while(n--) *d++ = (uchar)(*s++); } \
+ else { SFEND(f); SMwrite(f,s,n); SFBUF(f); } \
+ }
+#endif /* _sffmt_small */
+
+ SFCVINIT(); /* initialize conversion tables */
+
+ SFMTXSTART(f,-1);
+
+ if(!form)
+ SFMTXRETURN(f, -1);
+
+ /* make sure stream is in write mode and buffer is not NULL */
+ if(f->mode != SF_WRITE && _sfmode(f,SF_WRITE,0) < 0)
+ SFMTXRETURN(f, -1);
+
+ SFLOCK(f,0);
+
+ if(!f->data && !(f->flags&SF_STRING))
+ { f->data = f->next = (uchar*)data;
+ f->endb = f->data+sizeof(data);
+ }
+ SFINIT(f);
+#if _has_multibyte && defined(mbwidth)
+ sf_wcwidth = f->flags & SF_WCWIDTH;
+#endif
+
+ tls[1] = NIL(char*);
+
+ fmstk = NIL(Fmt_t*);
+ ft = NIL(Sffmt_t*);
+
+ oform = (char*)form;
+ va_copy(oargs,args);
+ argn = -1;
+ fp = NIL(Fmtpos_t*);
+
+loop_fmt :
+ SFMBCLR(&fmbs); /* clear multibyte states to parse the format string */
+ while((n = *form) )
+ { if(n != '%') /* collect the non-pattern chars */
+ { sp = (char*)form;
+ do
+ { if((n = SFMBLEN(form, &fmbs)) <= 0)
+ { n = 1;
+ SFMBCLR(&fmbs);
+ }
+ } while(*(form += n) && *form != '%');
+
+ n = form-sp;
+ SFwrite(f,sp,n);
+ continue;
+ }
+ else form += 1;
+
+ flags = 0;
+#if _PACKAGE_ast
+ scale = 0;
+#endif
+ size = width = precis = base = n_s = argp = -1;
+ ssp = _Sfdigits;
+ endep = ep = NIL(char*);
+ endsp = sp = buf+(sizeof(buf)-1);
+ t_str = NIL(char*);
+ n_str = dot = 0;
+
+ loop_flags: /* LOOP FOR \0, %, FLAGS, WIDTH, PRECISION, BASE, TYPE */
+ switch((fmt = *form++) )
+ {
+ case '\0':
+ SFputc(f,'%');
+ goto pop_fmt;
+ case '%' :
+ SFputc(f,'%');
+ continue;
+
+ case LEFTP : /* get the type enclosed in balanced parens */
+ t_str = (char*)form;
+ for(v = 1;;)
+ { switch(*form++)
+ {
+ case 0 : /* not balancable, retract */
+ form = t_str;
+ t_str = NIL(char*);
+ n_str = 0;
+ goto loop_flags;
+ case LEFTP : /* increasing nested level */
+ v += 1;
+ continue;
+ case RIGHTP : /* decreasing nested level */
+ if((v -= 1) != 0)
+ continue;
+ if(*t_str != '*' )
+ n_str = (form-1)-t_str;
+ else
+ { t_str = (*_Sffmtintf)(t_str+1,&n);
+ if(*t_str == '$')
+ { if(!fp &&
+ !(fp = (*_Sffmtposf)
+ (f,oform,oargs,ft,0)) )
+ goto pop_fmt;
+ n = FP_SET(n,argn);
+ }
+ else n = FP_SET(-1,argn);
+
+ if(fp)
+ { t_str = fp[n].argv.s;
+ n_str = fp[n].ft.size;
+ }
+ else if(ft && ft->extf )
+ { FMTSET(ft, form,args,
+ LEFTP, 0, 0, 0,0,0,
+ NIL(char*),0);
+ n = (*ft->extf)
+ (f,(Void_t*)&argv,ft);
+ if(n < 0)
+ goto pop_fmt;
+ if(!(ft->flags&SFFMT_VALUE) )
+ goto t_arg;
+ if((t_str = argv.s) &&
+ (n_str = (int)ft->size) < 0)
+ n_str = strlen(t_str);
+ }
+ else
+ { t_arg:
+ if((t_str = va_arg(args,char*)) )
+ n_str = strlen(t_str);
+ }
+ }
+ goto loop_flags;
+ }
+ }
+
+ case '-' :
+ flags = (flags & ~(SFFMT_CENTER|SFFMT_ZERO)) | SFFMT_LEFT;
+ goto loop_flags;
+ case '0' :
+ if(!(flags&(SFFMT_LEFT|SFFMT_CENTER)) )
+ flags |= SFFMT_ZERO;
+ goto loop_flags;
+ case ' ' :
+ if(!(flags&SFFMT_SIGN) )
+ flags |= SFFMT_BLANK;
+ goto loop_flags;
+ case '+' :
+ flags = (flags & ~SFFMT_BLANK) | SFFMT_SIGN;
+ goto loop_flags;
+ case '=' :
+ flags = (flags & ~(SFFMT_LEFT|SFFMT_ZERO)) | SFFMT_CENTER;
+ goto loop_flags;
+ case '#' :
+ flags |= SFFMT_ALTER;
+ goto loop_flags;
+ case QUOTE:
+ SFSETLOCALE(&decimal,&thousand);
+ if(thousand > 0)
+ flags |= SFFMT_THOUSAND;
+ goto loop_flags;
+
+ case '.' :
+ dot += 1;
+ if(dot == 1)
+ { /* so base can be defined without setting precis */
+ if(*form != '.')
+ precis = 0;
+ }
+ else if(dot == 2)
+ { base = 0; /* for %s,%c */
+ v = form[0] == 'l' ? form[1] : form[0];
+ if(v == 'c' || v == 'C' || v == 's' || v == 'S')
+ goto loop_flags;
+ if(*form && !isalnum(*form))
+ { v = form[1] == 'l' ? form[2] : form[1];
+ if(v == 'c' || v == 'C' || v == 's' || v == 'S')
+ { if(*form == '*')
+ goto do_star;
+ else
+ { base = *form++;
+ goto loop_flags;
+ }
+ }
+ }
+ }
+
+ if(isdigit(*form) )
+ { fmt = *form++;
+ goto dot_size;
+ }
+ else if(*form != '*')
+ goto loop_flags;
+ do_star:
+ form += 1; /* fall thru for '*' */
+ case '*' :
+ form = (*_Sffmtintf)(form,&n);
+ if(*form == '$')
+ { form += 1;
+ if(!fp && !(fp = (*_Sffmtposf)(f,oform,oargs,ft,0)) )
+ goto pop_fmt;
+ n = FP_SET(n,argn);
+ }
+ else n = FP_SET(-1,argn);
+
+ if(fp)
+ v = fp[n].argv.i;
+ else if(ft && ft->extf)
+ { FMTSET(ft, form,args, '.',dot, 0, 0,0,0, NIL(char*), 0);
+ if((*ft->extf)(f, (Void_t*)(&argv), ft) < 0)
+ goto pop_fmt;
+ fmt = ft->fmt;
+ flags = (flags&~SFFMT_TYPES) | (ft->flags&SFFMT_TYPES);
+ if(ft->flags&SFFMT_VALUE)
+ v = argv.i;
+ else v = (dot <= 2) ? va_arg(args,int) : 0;
+ }
+ else v = dot <= 2 ? va_arg(args,int) : 0;
+ goto dot_set;
+
+ case '1' : case '2' : case '3' :
+ case '4' : case '5' : case '6' :
+ case '7' : case '8' : case '9' :
+ dot_size :
+ for(v = fmt - '0'; isdigit(*form); ++form)
+ v = v*10 + (*form - '0');
+ if(*form == '$')
+ { form += 1;
+ if(!fp && !(fp = (*_Sffmtposf)(f,oform,oargs,ft,0)) )
+ goto pop_fmt;
+ argp = v-1;
+ goto loop_flags;
+ }
+ dot_set :
+ if(dot == 0)
+ { if((width = v) < 0)
+ { width = -width;
+ flags = (flags & ~(SFFMT_CENTER|SFFMT_ZERO)) | SFFMT_LEFT;
+ }
+ }
+ else if(dot == 1)
+ precis = v;
+ else if(dot == 2)
+ base = v;
+ goto loop_flags;
+
+ case 'I' : /* object length */
+ size = -1; flags = (flags & ~SFFMT_TYPES) | SFFMT_IFLAG;
+ if(isdigit(*form) )
+ { for(size = 0, n = *form; isdigit(n); n = *++form)
+ size = size*10 + (n - '0');
+ }
+ else if(*form == '*')
+ { form = (*_Sffmtintf)(form+1,&n);
+ if(*form == '$')
+ { form += 1;
+ if(!fp &&
+ !(fp = (*_Sffmtposf)(f,oform,oargs,ft,0)))
+ goto pop_fmt;
+ n = FP_SET(n,argn);
+ }
+ else n = FP_SET(-1,argn);
+
+ if(fp) /* use position list */
+ size = fp[n].argv.i;
+ else if(ft && ft->extf)
+ { FMTSET(ft, form,args, 'I',sizeof(int), 0, 0,0,0,
+ NIL(char*), 0);
+ if((*ft->extf)(f, (Void_t*)(&argv), ft) < 0)
+ goto pop_fmt;
+ if(ft->flags&SFFMT_VALUE)
+ size = argv.i;
+ else size = va_arg(args,int);
+ }
+ else size = va_arg(args,int);
+ }
+ goto loop_flags;
+
+ case 'l' :
+ size = -1; flags &= ~SFFMT_TYPES;
+ if(*form == 'l')
+ { form += 1;
+ flags |= SFFMT_LLONG;
+ }
+ else flags |= SFFMT_LONG;
+ goto loop_flags;
+ case 'h' :
+ size = -1; flags &= ~SFFMT_TYPES;
+ if(*form == 'h')
+ { form += 1;
+ flags |= SFFMT_SSHORT;
+ }
+ else flags |= SFFMT_SHORT;
+ goto loop_flags;
+ case 'L' :
+ size = -1; flags = (flags & ~SFFMT_TYPES) | SFFMT_LDOUBLE;
+ goto loop_flags;
+
+ case 'j' :
+ size = -1; flags = (flags&~SFFMT_TYPES) | SFFMT_JFLAG;
+ goto loop_flags;
+ case 'z' :
+ size = -1; flags = (flags&~SFFMT_TYPES) | SFFMT_ZFLAG;
+ goto loop_flags;
+ case 't' :
+ size = -1; flags = (flags&~SFFMT_TYPES) | SFFMT_TFLAG;
+ goto loop_flags;
+ default:
+ break;
+ }
+
+ /* set object size for scalars */
+ if(flags & SFFMT_TYPES)
+ { if((_Sftype[fmt]&(SFFMT_INT|SFFMT_UINT)) || fmt == 'n')
+ { if(flags&SFFMT_LONG)
+ size = sizeof(long);
+ else if(flags&SFFMT_SHORT)
+ size = sizeof(short);
+ else if(flags&SFFMT_SSHORT)
+ size = sizeof(char);
+ else if(flags&SFFMT_TFLAG)
+ size = sizeof(ptrdiff_t);
+ else if(flags&SFFMT_ZFLAG)
+ size = sizeof(size_t);
+ else if(flags&(SFFMT_LLONG|SFFMT_JFLAG) )
+ size = sizeof(Sflong_t);
+ else if(flags&SFFMT_IFLAG)
+ { if(size <= 0 ||
+ size == sizeof(Sflong_t)*CHAR_BIT )
+ size = sizeof(Sflong_t);
+ }
+ else if(size < 0)
+ size = sizeof(int);
+ }
+ else if(_Sftype[fmt]&SFFMT_FLOAT)
+ { if(flags&SFFMT_LDOUBLE)
+ size = sizeof(Sfdouble_t);
+ else if(flags&(SFFMT_LONG|SFFMT_LLONG))
+ size = sizeof(double);
+ else if(flags&SFFMT_IFLAG)
+ { if(size <= 0)
+ size = sizeof(Sfdouble_t);
+ }
+ else if(size < 0)
+ size = sizeof(float);
+ }
+ else if(_Sftype[fmt]&SFFMT_CHAR)
+ {
+#if _has_multibyte
+ if((flags&SFFMT_LONG) || fmt == 'C')
+ { size = sizeof(wchar_t) > sizeof(int) ?
+ sizeof(wchar_t) : sizeof(int);
+ } else
+#endif
+ if(size < 0)
+ size = sizeof(int);
+ }
+ }
+
+ argp = FP_SET(argp,argn);
+ if(fp)
+ { if(ft && ft->extf && fp[argp].ft.fmt != fp[argp].fmt)
+ fmt = fp[argp].ft.fmt;
+ argv = fp[argp].argv;
+ size = fp[argp].ft.size;
+ }
+ else if(ft && ft->extf ) /* extended processing */
+ { FMTSET(ft, form,args, fmt, size,flags, width,precis,base,
+ t_str,n_str);
+ SFEND(f); SFOPEN(f,0);
+ v = (*ft->extf)(f, (Void_t*)(&argv), ft);
+ SFLOCK(f,0); SFBUF(f);
+
+ if(v < 0) /* no further processing */
+ goto pop_fmt;
+ else if(v > 0) /* extf output v bytes */
+ { n_output += v;
+ continue;
+ }
+ else /* extf did not output */
+ { FMTGET(ft, form,args, fmt, size,flags, width,precis,base);
+
+ if(!(ft->flags&SFFMT_VALUE))
+ goto arg_list;
+ else if(_Sftype[fmt]&(SFFMT_INT|SFFMT_UINT) )
+ { if(size == sizeof(short))
+ { if(_Sftype[fmt]&SFFMT_INT)
+ argv.i = argv.h;
+ else argv.i = argv.uh;
+ }
+ else if(size == sizeof(char))
+ { if(_Sftype[fmt]&SFFMT_INT)
+ argv.i = argv.c;
+ else argv.i = argv.uc;
+ }
+ }
+ else if(_Sftype[fmt]&SFFMT_FLOAT )
+ { if(size == sizeof(float) )
+ argv.d = argv.f;
+ }
+ else if(_Sftype[fmt]&SFFMT_CHAR)
+ { if(base < 0)
+ argv.i = (int)argv.c;
+ }
+ }
+ }
+ else
+ { arg_list:
+ switch(_Sftype[fmt])
+ { case SFFMT_INT:
+ case SFFMT_UINT:
+#if !_ast_intmax_long
+ if(size == sizeof(Sflong_t))
+ argv.ll = va_arg(args, Sflong_t);
+ else
+#endif
+ if(size == sizeof(long) )
+ argv.l = va_arg(args, long);
+ else argv.i = va_arg(args, int);
+ break;
+ case SFFMT_FLOAT:
+#if !_ast_fltmax_double
+ if(size == sizeof(Sfdouble_t))
+ argv.ld = va_arg(args,Sfdouble_t);
+ else
+#endif
+ argv.d = va_arg(args,double);
+ break;
+ case SFFMT_POINTER:
+ argv.vp = va_arg(args,Void_t*);
+ break;
+ case SFFMT_CHAR:
+ if(base >= 0)
+ argv.s = va_arg(args,char*);
+#if _has_multibyte
+ else if((flags & SFFMT_LONG) || fmt == 'C')
+ { if(sizeof(wchar_t) <= sizeof(uint) )
+ argv.wc = (wchar_t)va_arg(args,uint);
+ else argv.wc = va_arg(args,wchar_t);
+ }
+#endif
+ else argv.i = va_arg(args,int);
+ break;
+ default: /* unknown pattern */
+ break;
+ }
+ }
+
+ switch(fmt) /* PRINTF DIRECTIVES */
+ {
+ default : /* unknown directive */
+ form -= 1;
+ argn -= 1;
+ continue;
+
+ case '!' : /* stacking a new environment */
+ if(!fp)
+ fp = (*_Sffmtposf)(f,oform,oargs,ft,0);
+ else goto pop_fmt;
+
+ if(!argv.ft)
+ goto pop_fmt;
+ if(!argv.ft->form && ft ) /* change extension functions */
+ { if(ft->eventf &&
+ (*ft->eventf)(f,SF_DPOP,(Void_t*)form,ft) < 0)
+ continue;
+ fmstk->ft = ft = argv.ft;
+ }
+ else /* stack a new environment */
+ { if(!(fm = (Fmt_t*)malloc(sizeof(Fmt_t))) )
+ goto done;
+
+ ft = fm->ft = argv.ft;
+ SFMBSET(ft->mbs, &fmbs);
+ if(ft->form)
+ { fm->form = (char*)form; SFMBCPY(&fm->mbs,&fmbs);
+ va_copy(fm->args,args);
+
+ fm->oform = oform;
+ va_copy(fm->oargs,oargs);
+ fm->argn = argn;
+ fm->fp = fp;
+
+ form = ft->form; SFMBCLR(ft->mbs);
+ va_copy(args,ft->args);
+ argn = -1;
+ fp = NIL(Fmtpos_t*);
+ oform = (char*)form;
+ va_copy(oargs,args);
+ }
+ else fm->form = NIL(char*);
+
+ fm->eventf = ft->eventf;
+ fm->next = fmstk;
+ fmstk = fm;
+ }
+ continue;
+
+ case 'S':
+ flags = (flags & ~SFFMT_TYPES) | SFFMT_LONG;
+ case 's':
+ if(base >= 0) /* list of strings */
+ { if(!(ls = argv.sp) || !ls[0])
+ continue;
+ }
+ else
+ { if(!(sp = argv.s))
+ { sp = "(null)";
+ flags &= ~SFFMT_LONG;
+ }
+#if _PACKAGE_ast
+ str_cvt:
+ if(scale)
+ { size = base = -1;
+ flags &= ~SFFMT_LONG;
+ }
+#endif
+ ls = tls; tls[0] = sp;
+ }
+ for(sp = *ls;;)
+ { /* v: number of bytes w: print width of those v bytes */
+#if _has_multibyte
+ if(flags & SFFMT_LONG)
+ { v = 0;
+#ifdef mbwidth
+ w = 0;
+#endif
+ SFMBCLR(&mbs);
+ for(n = 0, wsp = (wchar_t*)sp;; ++wsp, ++n)
+ { if((size >= 0 && n >= size) ||
+ (size < 0 && *wsp == 0) )
+ break;
+ if((n_s = wcrtomb(buf, *wsp, &mbs)) <= 0)
+ break;
+#ifdef mbwidth
+ if(sf_wcwidth )
+ { n_w = mbwidth(*wsp);
+ if(precis >= 0 && (w+n_w) > precis )
+ break;
+ w += n_w;
+ }
+ else
+#endif
+ if(precis >= 0 && (v+n_s) > precis )
+ break;
+ v += n_s;
+ }
+#ifdef mbwidth
+ if(!sf_wcwidth )
+ w = v;
+#endif
+ }
+#if defined(mbwide) && defined(mbchar) && defined(mbwidth)
+ else if (mbwide())
+ { w = 0;
+ SFMBCLR(&mbs);
+ ssp = sp;
+ for(;;)
+ { if((size >= 0 && w >= size) ||
+ (size < 0 && *ssp == 0) )
+ break;
+ osp = ssp;
+ n = mbchar(osp);
+ n_w = sf_wcwidth ? mbwidth(n) : 1;
+ if(precis >= 0 && (w+n_w) > precis )
+ break;
+ w += n_w;
+ ssp = osp;
+ }
+ v = ssp - sp;
+ }
+#endif
+ else
+#endif
+ { if((v = size) < 0)
+ for(v = 0; sp[v]; ++v)
+ if(v == precis)
+ break;
+ if(precis >= 0 && v > precis)
+ v = precis;
+ w = v;
+ }
+
+ if((n = width - w) > 0 && !(flags&SFFMT_LEFT) )
+ { if(flags&SFFMT_CENTER)
+ { n -= (k = n/2);
+ SFnputc(f, ' ', k);
+ }
+ else
+ {
+ SFnputc(f, ' ', n);
+ n = 0;
+ }
+ }
+#if _has_multibyte
+ if(flags & SFFMT_LONG)
+ { SFMBCLR(&mbs);
+ for(wsp = (wchar_t*)sp; w > 0; ++wsp, --w)
+ { if((n_s = wcrtomb(buf, *wsp, &mbs)) <= 0)
+ break;
+ sp = buf; SFwrite(f, sp, n_s);
+ }
+ }
+ else
+#endif
+ { SFwrite(f,sp,v); }
+ if(n > 0)
+ { SFnputc(f,' ',n); }
+ if(!(sp = *++ls))
+ break;
+ else if(base > 0)
+ { SFputc(f,base); }
+ }
+ continue;
+
+ case 'C':
+ flags = (flags & ~SFFMT_TYPES) | SFFMT_LONG;
+ case 'c':
+ if(precis <= 0) /* # of times to repeat a character */
+ precis = 1;
+#if _has_multibyte
+ if(flags & SFFMT_LONG)
+ { if(base >= 0)
+ { if(!(wsp = (wchar_t*)argv.s) )
+ continue;
+ for(size = 0; wsp[size]; ++size)
+ ;
+ }
+ else
+ { wsp = &argv.wc;
+ size = 1;
+ }
+ }
+ else
+#endif
+ { if(base >= 0)
+ { if(!(sp = argv.s) )
+ continue;
+ size = strlen(sp);
+ }
+ else
+ { argv.c = (char)(argv.i);
+ sp = &argv.c;
+ size = 1;
+ }
+ }
+
+ while(size > 0)
+ {
+#if _has_multibyte
+ if(flags&SFFMT_LONG)
+ { SFMBCLR(&mbs);
+ if((n_s = wcrtomb(buf, *wsp++, &mbs)) <= 0)
+ break;
+#ifdef mbwidth
+ if(sf_wcwidth)
+ n_s = mbwidth(*(wsp - 1));
+#endif
+ n = width - precis*n_s; /* padding amount */
+ }
+ else
+#endif
+ if(flags&SFFMT_ALTER)
+ { n_s = chr2str(buf, *sp++);
+ n = width - precis*n_s;
+ }
+ else
+ { fmt = *sp++;
+ n = width - precis;
+ }
+
+ if(n > 0 && !(flags&SFFMT_LEFT) )
+ { if(flags&SFFMT_CENTER)
+ { n -= (k = n/2);
+ SFnputc(f, ' ', k);
+ }
+ else
+ { SFnputc(f, ' ', n);
+ n = 0;
+ }
+ }
+
+ v = precis; /* need this because SFnputc may clear it */
+#if _has_multibyte
+ if(flags&SFFMT_LONG)
+ { for(; v > 0; --v)
+ { ssp = buf; k = n_s; SFwrite(f,ssp,k); }
+ }
+ else
+#endif
+ if(flags&SFFMT_ALTER)
+ { for(; v > 0; --v)
+ { ssp = buf; k = n_s; SFwrite(f,ssp,k); }
+ }
+ else
+ { SFnputc(f, fmt, v);
+ }
+
+ if(n > 0)
+ { SFnputc(f,' ',n); };
+
+ if((size -= 1) > 0 && base > 0)
+ { SFputc(f,base); }
+ }
+ continue;
+
+ case 'n': /* return current output length */
+ SFEND(f);
+#if !_ast_intmax_long
+ if(size == sizeof(Sflong_t) )
+ *((Sflong_t*)argv.vp) = (Sflong_t)n_output;
+ else
+#endif
+ if(size == sizeof(long))
+ *((long*)argv.vp) = (long)n_output;
+ else if(size == sizeof(short) )
+ *((short*)argv.vp) = (short)n_output;
+ else if(size == sizeof(uchar) )
+ *((uchar*)argv.vp) = (uchar)n_output;
+ else *((int*)argv.vp) = (int)n_output;
+
+ continue;
+
+ case 'p': /* pointer value */
+ fmt = 'x';
+ base = 16; n_s = 15; n = 4;
+ flags = (flags&~(SFFMT_SIGN|SFFMT_BLANK|SFFMT_ZERO))|SFFMT_ALTER;
+#if _more_void_int
+ lv = (Sflong_t)((Sfulong_t)argv.vp);
+ goto long_cvt;
+#else
+ v = (int)((uint)argv.vp);
+ goto int_cvt;
+#endif
+ case 'o':
+ base = 8; n_s = 7; n = 3;
+ flags &= ~(SFFMT_SIGN|SFFMT_BLANK);
+ goto int_arg;
+ case 'X':
+ ssp = "0123456789ABCDEF";
+ case 'x':
+ base = 16; n_s = 15; n = 4;
+ flags &= ~(SFFMT_SIGN|SFFMT_BLANK);
+ goto int_arg;
+ case 'i':
+#if _PACKAGE_ast
+ if((flags&SFFMT_ALTER) && base < 0)
+ { flags &= ~SFFMT_ALTER;
+ scale = 1024;
+ }
+#endif
+ fmt = 'd';
+ goto d_format;
+ case 'u':
+ flags &= ~(SFFMT_SIGN|SFFMT_BLANK);
+ case 'd':
+ d_format:
+#if _PACKAGE_ast
+ if((flags&SFFMT_ALTER) && base < 0)
+ { flags &= ~SFFMT_ALTER;
+ scale = 1000;
+ }
+#endif
+ if(base < 2 || base > SF_RADIX)
+ base = 10;
+ if((base&(n_s = base-1)) == 0)
+ { if(base < 8)
+ n = base < 4 ? 1 : 2;
+ else if(base < 32)
+ n = base < 16 ? 3 : 4;
+ else n = base < 64 ? 5 : 6;
+ }
+ else n_s = base == 10 ? -1 : 0;
+
+ int_arg:
+#if !_ast_intmax_long || _more_long_int || _more_void_int
+ if(size == sizeof(Sflong_t))
+ { lv = argv.ll;
+ goto long_cvt;
+ }
+ else if(sizeof(long) < sizeof(Sflong_t) && size == sizeof(long))
+ { if(fmt == 'd')
+ lv = (Sflong_t)argv.l;
+ else lv = (Sflong_t)argv.ul;
+ long_cvt:
+#if _PACKAGE_ast
+ if(scale)
+ { sp = fmtscale(lv, scale);
+ goto str_cvt;
+ }
+#endif
+ if(lv == 0 && precis == 0)
+ break;
+ if(lv < 0 && fmt == 'd' )
+ { flags |= SFFMT_MINUS;
+ if(lv == HIGHBITL) /* avoid overflow */
+ { lv = (Sflong_t)(HIGHBITL/base);
+ *--sp = _Sfdigits[HIGHBITL -
+ ((Sfulong_t)lv)*base];
+ }
+ else lv = -lv;
+ }
+ if(n_s < 0) /* base 10 */
+ { Sflong_t nv;
+ sfucvt(lv,sp,nv,ssp,Sflong_t,Sfulong_t);
+ }
+ else if(n_s > 0) /* base power-of-2 */
+ { do
+ { *--sp = ssp[lv&n_s];
+ } while((lv = ((Sfulong_t)lv) >> n) );
+ }
+ else /* general base */
+ { do
+ { *--sp = ssp[((Sfulong_t)lv)%base];
+ } while((lv = ((Sfulong_t)lv)/base) );
+ }
+ } else
+#endif
+ if(sizeof(short) < sizeof(int) && size == sizeof(short) )
+ { if(fmt == 'd')
+ v = (int)((short)argv.i);
+ else v = (int)((ushort)argv.i);
+ goto int_cvt;
+ }
+ else if(size == sizeof(char))
+ { if(fmt != 'd')
+ v = (int)((uchar)argv.i);
+ else
+ {
+#if _key_signed
+ v = (int)((signed char)argv.i);
+#else
+ if(argv.i < 0)
+ v = -((int)((char)(-argv.i)));
+ else v = ((int)((char)( argv.i)));
+#endif
+ }
+ goto int_cvt;
+ }
+ else
+ { v = argv.i;
+ int_cvt:
+#if _PACKAGE_ast
+ if(scale)
+ { sp = fmtscale(v, scale);
+ goto str_cvt;
+ }
+#endif
+ if(v == 0 && precis == 0)
+ break;
+ if(v < 0 && fmt == 'd' )
+ { flags |= SFFMT_MINUS;
+ if(v == HIGHBITI) /* avoid overflow */
+ { v = (int)(HIGHBITI/base);
+ *--sp = _Sfdigits[HIGHBITI -
+ ((uint)v)*base];
+ }
+ else v = -v;
+ }
+ if(n_s < 0) /* base 10 */
+ { sfucvt(v,sp,n,ssp,int,uint);
+ }
+ else if(n_s > 0) /* base power-of-2 */
+ { do
+ { *--sp = ssp[v&n_s];
+ } while((v = ((uint)v) >> n) );
+ }
+ else /* n_s == 0, general base */
+ { do
+ { *--sp = ssp[((uint)v)%base];
+ } while((v = ((uint)v)/base) );
+ }
+ }
+
+ if(n_s < 0 && (flags&SFFMT_THOUSAND) && (n = endsp-sp) > 3)
+ { if((n %= 3) == 0)
+ n = 3;
+ for(ep = buf+SLACK, endep = ep + n; ; )
+ { while(ep < endep)
+ *ep++ = *sp++;
+ if(sp == endsp)
+ break;
+ if(sp <= endsp-3)
+ *ep++ = thousand;
+ endep = ep+3;
+ }
+ sp = buf+SLACK;
+ endsp = ep;
+ }
+
+ /* zero padding for precision if have room in buffer */
+ if(precis > 0 && (precis -= (endsp-sp)) < (sp-buf)-64)
+ while(precis-- > 0)
+ *--sp = '0';
+
+ if(flags&SFFMT_ALTER) /* prefix */
+ { if(fmt == 'o')
+ { if(*sp != '0')
+ *--sp = '0';
+ }
+ else
+ { if(width > 0 && (flags&SFFMT_ZERO))
+ { /* do 0 padding first */
+ if(fmt == 'x' || fmt == 'X')
+ n = 0;
+ else if(dot < 2)
+ n = width;
+ else n = base < 10 ? 2 : 3;
+ n += (flags&(SFFMT_MINUS|SFFMT_SIGN)) ?
+ 1 : 0;
+ n = width - (n + (endsp-sp));
+ while(n-- > 0)
+ *--sp = '0';
+ }
+ if(fmt == 'x' || fmt == 'X')
+ { *--sp = (char)fmt;
+ *--sp = '0';
+ }
+ else if(dot >= 2)
+ { /* base#value notation */
+ *--sp = '#';
+ if(base < 10)
+ *--sp = (char)('0'+base);
+ else
+ { *--sp = _Sfdec[(base <<= 1)+1];
+ *--sp = _Sfdec[base];
+ }
+ }
+ }
+ }
+
+ break;
+
+ case 'g': case 'G': /* these ultimately become %e or %f */
+ case 'a': case 'A':
+ case 'e': case 'E':
+ case 'f': case 'F':
+#if !_ast_fltmax_double
+ if(size == sizeof(Sfdouble_t) )
+ { v = SFFMT_LDOUBLE;
+ dval = argv.ld;
+ }
+ else
+#endif
+ { v = 0;
+ dval = argv.d;
+ }
+
+ if(fmt == 'e' || fmt == 'E' && (v |= SFFMT_UPPER))
+ { v |= SFFMT_EFORMAT;
+ n = (precis = precis < 0 ? FPRECIS : precis)+1;
+ ep = _sfcvt(dval,tmp+1,sizeof(tmp)-1, min(n,SF_FDIGITS),
+ &decpt, &sign, &n_s, v);
+ goto e_format;
+ }
+ else if(fmt == 'f' || fmt == 'F' && (v |= SFFMT_UPPER))
+ { precis = precis < 0 ? FPRECIS : precis;
+ ep = _sfcvt(dval,tmp+1,sizeof(tmp)-1, min(precis,SF_FDIGITS),
+ &decpt, &sign, &n_s, v);
+ goto f_format;
+ }
+ else if(fmt == 'a' || fmt == 'A' && (v |= SFFMT_UPPER))
+ { v |= SFFMT_AFORMAT;
+ if(precis < 0)
+ { if(v & SFFMT_LDOUBLE)
+ precis = 2*(sizeof(Sfdouble_t) - 2);
+ else precis = 2*(sizeof(double) - 2);
+ }
+ n = precis + 1;
+ ep = _sfcvt(dval,tmp+1,sizeof(tmp)-1, min(n,SF_FDIGITS),
+ &decpt, &sign, &n_s, v);
+
+ sp = endsp = buf+1; /* reserve space for sign */
+ *endsp++ = '0';
+ *endsp++ = fmt == 'a' ? 'x' : 'X';
+ if (!isxdigit(*ep))
+ goto infinite;
+ goto a_format;
+ }
+ else /* 'g' or 'G' format */
+ { precis = precis < 0 ? FPRECIS : precis == 0 ? 1 : precis;
+ if(fmt == 'G')
+ v |= SFFMT_UPPER;
+ v |= SFFMT_EFORMAT;
+ ep = _sfcvt(dval,tmp+1,sizeof(tmp)-1, min(precis,SF_FDIGITS),
+ &decpt, &sign, &n_s, v);
+ if(dval == 0.)
+ decpt = 1;
+ else if(*ep == 'I')
+ goto infinite;
+
+ if(!(flags&SFFMT_ALTER))
+ { /* zap trailing 0s */
+ if((n = n_s) > precis)
+ n = precis;
+ while((n -= 1) >= 1 && ep[n] == '0')
+ ;
+ n += 1;
+ }
+ else n = precis;
+
+ if(decpt < -3 || decpt > precis)
+ { precis = n-1;
+ goto e_format;
+ }
+ else
+ { precis = n - decpt;
+ goto f_format;
+ }
+ }
+
+ e_format: /* build the x.yyyy string */
+ if(isalpha(*ep))
+ goto infinite;
+ sp = endsp = buf+1; /* reserve space for sign */
+ a_format:
+ *endsp++ = *ep ? *ep++ : '0';
+
+ SFSETLOCALE(&decimal,&thousand);
+ if(precis > 0 || (flags&SFFMT_ALTER))
+ *endsp++ = decimal;
+ ssp = endsp;
+ endep = ep+precis;
+ while((*endsp++ = *ep++) && ep <= endep)
+ ;
+ precis -= (endsp -= 1) - ssp;
+
+ /* build the exponent */
+ ep = endep = buf+(sizeof(buf)-1);
+ if(dval != 0.)
+ { if((n = decpt - 1) < 0)
+ n = -n;
+ while(n > 9)
+ { v = n; n /= 10;
+ *--ep = (char)('0' + (v - n*10));
+ }
+ }
+ else n = 0;
+ *--ep = (char)('0' + n);
+ if(endep-ep <= 1) /* at least 2 digits */
+ *--ep = '0';
+
+ /* the e/Exponent separator and sign */
+ *--ep = (decpt > 0 || dval == 0.) ? '+' : '-';
+ *--ep = fmt == 'a' ? 'p' : fmt == 'A' ? 'P' :
+ isupper(fmt) ? 'E' : 'e';
+
+ goto end_aefg;
+
+ f_format: /* data before the decimal point */
+ if(isalpha(*ep))
+ {
+ infinite:
+ flags &= ~SFFMT_ZERO;
+ endsp = (sp = ep)+sfslen();
+ ep = endep;
+ precis = 0;
+ goto end_aefg;
+ }
+
+ SFSETLOCALE(&decimal,&thousand);
+ endsp = sp = buf+1; /* save a space for sign */
+ endep = ep+decpt;
+ if(decpt > 3 && (flags&SFFMT_THOUSAND) )
+ { if((n = decpt%3) == 0)
+ n = 3;
+ while(ep < endep && (*endsp++ = *ep++) )
+ { if(--n == 0 && (ep <= endep-3) )
+ { *endsp++ = thousand;
+ n = 3;
+ }
+ }
+ }
+ else
+ { while(ep < endep && (*endsp++ = *ep++))
+ ;
+ }
+ if(endsp == sp)
+ *endsp++ = '0';
+
+ if(precis > 0 || (flags&SFFMT_ALTER))
+ *endsp++ = decimal;
+
+ if((n = -decpt) > 0)
+ { /* output zeros for negative exponent */
+ ssp = endsp + min(n,precis);
+ precis -= n;
+ while(endsp < ssp)
+ *endsp++ = '0';
+ }
+
+ ssp = endsp;
+ endep = ep+precis;
+ while((*endsp++ = *ep++) && ep <= endep)
+ ;
+ precis -= (endsp -= 1) - ssp;
+ ep = endep;
+ end_aefg:
+ flags |= SFFMT_FLOAT;
+ if(sign)
+ flags |= SFFMT_MINUS;
+ break;
+ }
+
+ if(flags == 0 && width <= 0)
+ goto do_output;
+
+ if(flags&SFFMT_PREFIX)
+ fmt = (flags&SFFMT_MINUS) ? '-' : (flags&SFFMT_SIGN) ? '+' : ' ';
+
+ n = (endsp-sp) + (endep-ep) + (precis <= 0 ? 0 : precis) +
+ ((flags&SFFMT_PREFIX) ? 1 : 0);
+ if((v = width-n) <= 0)
+ v = 0;
+ else if(!(flags&SFFMT_ZERO)) /* right padding */
+ { if(flags&SFFMT_LEFT)
+ v = -v;
+ else if(flags&SFFMT_PREFIX) /* blank padding, output prefix now */
+ { *--sp = fmt;
+ flags &= ~SFFMT_PREFIX;
+ }
+ }
+
+ if(flags&SFFMT_PREFIX) /* put out the prefix */
+ { SFputc(f,fmt);
+ if(fmt != ' ')
+ flags |= SFFMT_ZERO;
+ }
+
+ if((n = v) > 0) /* left padding */
+ { v = (flags&SFFMT_ZERO) ? '0' : ' ';
+ SFnputc(f,v,n);
+ }
+
+ if((n = precis) > 0 && !(flags&SFFMT_FLOAT))
+ { /* padding for integer precision */
+ SFnputc(f,'0',n);
+ precis = 0;
+ }
+
+ do_output:
+ if((n = endsp-sp) > 0)
+ SFwrite(f,sp,n);
+
+ if(flags&(SFFMT_FLOAT|SFFMT_LEFT))
+ { /* SFFMT_FLOAT: right padding for float precision */
+ if((n = precis) > 0)
+ SFnputc(f,'0',n);
+
+ /* SFFMT_FLOAT: the exponent of %eE */
+ if((n = endep - (sp = ep)) > 0)
+ SFwrite(f,sp,n);
+
+ /* SFFMT_LEFT: right padding */
+ if((n = -v) > 0)
+ { SFnputc(f,' ',n); }
+ }
+ }
+
+pop_fmt:
+ if(fp)
+ { free(fp);
+ fp = NIL(Fmtpos_t*);
+ }
+ while((fm = fmstk) ) /* pop the format stack and continue */
+ { if(fm->eventf)
+ { if(!form || !form[0])
+ (*fm->eventf)(f,SF_FINAL,NIL(Void_t*),ft);
+ else if((*fm->eventf)(f,SF_DPOP,(Void_t*)form,ft) < 0)
+ goto loop_fmt;
+ }
+
+ fmstk = fm->next;
+ if((form = fm->form) )
+ { SFMBCPY(&fmbs,&fm->mbs);
+ va_copy(args, fm->args);
+ oform = fm->oform;
+ va_copy(oargs,fm->oargs);
+ argn = fm->argn;
+ fp = fm->fp;
+ }
+ ft = fm->ft;
+ free(fm);
+ if(form && form[0])
+ goto loop_fmt;
+ }
+
+done:
+ if(fp)
+ free(fp);
+ while((fm = fmstk) )
+ { if(fm->eventf)
+ (*fm->eventf)(f,SF_FINAL,NIL(Void_t*),fm->ft);
+ fmstk = fm->next;
+ free(fm);
+ }
+
+ SFEND(f);
+
+ n = f->next - f->data;
+ if((sp = (char*)f->data) == data)
+ f->endw = f->endr = f->endb = f->data = NIL(uchar*);
+ f->next = f->data;
+
+ if((((flags = f->flags)&SF_SHARE) && !(flags&SF_PUBLIC) ) ||
+ (n > 0 && (sp == data || (flags&SF_LINE) ) ) )
+ (void)SFWRITE(f,(Void_t*)sp,n);
+ else f->next += n;
+
+ SFOPEN(f,0);
+ SFMTXRETURN(f, n_output);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-06-27 05:50:48 +0000