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Annotation of OpenXM_contrib/gmp/printf/doprnti.c, Revision 1.1

1.1     ! ohara       1: /* __gmp_doprnt_integer -- integer style formatted output.
        !             2:
        !             3:    THE FUNCTIONS IN THIS FILE ARE FOR INTERNAL USE ONLY.  THEY'RE ALMOST
        !             4:    CERTAIN TO BE SUBJECT TO INCOMPATIBLE CHANGES OR DISAPPEAR COMPLETELY IN
        !             5:    FUTURE GNU MP RELEASES.
        !             6:
        !             7: Copyright 2001 Free Software Foundation, Inc.
        !             8:
        !             9: This file is part of the GNU MP Library.
        !            10:
        !            11: The GNU MP Library is free software; you can redistribute it and/or modify
        !            12: it under the terms of the GNU Lesser General Public License as published by
        !            13: the Free Software Foundation; either version 2.1 of the License, or (at your
        !            14: option) any later version.
        !            15:
        !            16: The GNU MP Library is distributed in the hope that it will be useful, but
        !            17: WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
        !            18: or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
        !            19: License for more details.
        !            20:
        !            21: You should have received a copy of the GNU Lesser General Public License
        !            22: along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
        !            23: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
        !            24: MA 02111-1307, USA. */
        !            25:
        !            26: #include "config.h"
        !            27:
        !            28: #if HAVE_STDARG
        !            29: #include <stdarg.h>    /* for va_list and hence doprnt_funs_t */
        !            30: #else
        !            31: #include <varargs.h>
        !            32: #endif
        !            33:
        !            34: #include <string.h>
        !            35: #include <stdio.h>
        !            36: #include <stdlib.h>
        !            37:
        !            38: #include "gmp.h"
        !            39: #include "gmp-impl.h"
        !            40:
        !            41:
        !            42: int
        !            43: __gmp_doprnt_integer (const struct doprnt_funs_t *funs,
        !            44:                       void *data,
        !            45:                       const struct doprnt_params_t *p,
        !            46:                       const char *s)
        !            47: {
        !            48:   int         retval = 0;
        !            49:   int         slen, justlen, showbaselen, sign, signlen, slashlen, zeros;
        !            50:   int         justify, den_showbaselen;
        !            51:   const char  *slash, *showbase;
        !            52:
        !            53:   /* '+' or ' ' if wanted, and don't already have '-' */
        !            54:   sign = p->sign;
        !            55:   if (s[0] == '-')
        !            56:     {
        !            57:       sign = s[0];
        !            58:       s++;
        !            59:     }
        !            60:   signlen = (sign != '\0');
        !            61:
        !            62:   /* if the precision was explicitly 0, print nothing for a 0 value */
        !            63:   if (*s == '0' && p->prec == 0)
        !            64:     s++;
        !            65:
        !            66:   slen = strlen (s);
        !            67:   slash = strchr (s, '/');
        !            68:
        !            69:   showbase = NULL;
        !            70:   showbaselen = 0;
        !            71:
        !            72:   if (p->showbase != DOPRNT_SHOWBASE_NO)
        !            73:     {
        !            74:       switch (p->base) {
        !            75:       case 16:  showbase = "0x"; showbaselen = 2; break;
        !            76:       case -16: showbase = "0X"; showbaselen = 2; break;
        !            77:       case 8:   showbase = "0";  showbaselen = 1; break;
        !            78:       }
        !            79:     }
        !            80:
        !            81:   den_showbaselen = showbaselen;
        !            82:   if (slash == NULL
        !            83:       || (p->showbase == DOPRNT_SHOWBASE_NONZERO && slash[1] == '0'))
        !            84:     den_showbaselen = 0;
        !            85:
        !            86:   if (p->showbase == DOPRNT_SHOWBASE_NONZERO && s[0] == '0')
        !            87:     showbaselen = 0;
        !            88:
        !            89:   /* the influence of p->prec on mpq is currently undefined */
        !            90:   zeros = MAX (0, p->prec - slen);
        !            91:
        !            92:   /* space left over after actual output length */
        !            93:   justlen = p->width
        !            94:     - (strlen(s) + signlen + showbaselen + den_showbaselen + zeros);
        !            95:
        !            96:   justify = p->justify;
        !            97:   if (justlen <= 0) /* no justifying if exceed width */
        !            98:     justify = DOPRNT_JUSTIFY_NONE;
        !            99:
        !           100:   if (justify == DOPRNT_JUSTIFY_RIGHT)             /* pad right */
        !           101:     DOPRNT_REPS (p->fill, justlen);
        !           102:
        !           103:   DOPRNT_REPS_MAYBE (sign, signlen);               /* sign */
        !           104:
        !           105:   DOPRNT_MEMORY_MAYBE (showbase, showbaselen);     /* base */
        !           106:
        !           107:   DOPRNT_REPS_MAYBE ('0', zeros);                  /* zeros */
        !           108:
        !           109:   if (justify == DOPRNT_JUSTIFY_INTERNAL)          /* pad internal */
        !           110:     DOPRNT_REPS (p->fill, justlen);
        !           111:
        !           112:   /* if there's a showbase on the denominator, then print the numerator
        !           113:      separately so it can be inserted */
        !           114:   if (den_showbaselen != 0)
        !           115:     {
        !           116:       ASSERT (slash != NULL);
        !           117:       slashlen = slash+1 - s;
        !           118:       DOPRNT_MEMORY (s, slashlen);                 /* numerator and slash */
        !           119:       slen -= slashlen;
        !           120:       s += slashlen;
        !           121:       DOPRNT_MEMORY (showbase, den_showbaselen);
        !           122:     }
        !           123:
        !           124:   DOPRNT_MEMORY (s, slen);                         /* number, or denominator */
        !           125:
        !           126:   if (justify == DOPRNT_JUSTIFY_LEFT)              /* pad left */
        !           127:     DOPRNT_REPS (p->fill, justlen);
        !           128:
        !           129:  done:
        !           130:   return retval;
        !           131:
        !           132:  error:
        !           133:   retval = -1;
        !           134:   goto done;
        !           135: }