FreeCalypso > hg > freecalypso-sw
annotate gsm-fw/sprintf/old/doprnt.c @ 271:cd043e690621
imei-luhn utility written
author | Michael Spacefalcon <msokolov@ivan.Harhan.ORG> |
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date | Fri, 07 Feb 2014 05:00:24 +0000 |
parents | 7e45ada9c365 |
children |
rev | line source |
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79
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1 /* the guts of printf - this implementation came from 4.3BSD-Tahoe */ |
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2 |
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3 #include <sys/types.h> |
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4 #include <ctype.h> |
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5 #include <stdarg.h> |
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6 |
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7 #define PUTC(ch) (*(*outptrp)++ = (ch)) |
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8 |
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9 #define ARG() \ |
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10 _ulong = flags&LONGINT ? va_arg(argp, long) : va_arg(argp, int); |
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11 |
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12 #define BUF 256 |
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13 |
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14 #define todigit(c) ((c) - '0') |
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15 #define tochar(n) ((n) + '0') |
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16 |
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17 /* have to deal with the negative buffer count kludge */ |
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18 #define NEGATIVE_COUNT_KLUDGE |
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19 |
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20 #define LONGINT 0x01 /* long integer */ |
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21 #define LONGDBL 0x02 /* long double; unimplemented */ |
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22 #define SHORTINT 0x04 /* short integer */ |
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23 #define ALT 0x08 /* alternate form */ |
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24 #define LADJUST 0x10 /* left adjustment */ |
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25 #define ZEROPAD 0x20 /* zero (as opposed to blank) pad */ |
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26 #define HEXPREFIX 0x40 /* add 0x or 0X prefix */ |
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27 |
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28 _doprnt(fmt0, argp, outptrp) |
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29 u_char *fmt0; |
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30 va_list argp; |
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31 char **outptrp; |
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32 { |
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33 register u_char *fmt; /* format string */ |
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34 register int ch; /* character from fmt */ |
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35 register int cnt; /* return value accumulator */ |
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36 register int n; /* random handy integer */ |
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37 register char *t; /* buffer pointer */ |
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38 u_long _ulong; /* integer arguments %[diouxX] */ |
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39 int base; /* base for [diouxX] conversion */ |
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40 int dprec; /* decimal precision in [diouxX] */ |
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41 int fieldsz; /* field size expanded by sign, etc */ |
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42 int flags; /* flags as above */ |
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43 int prec; /* precision from format (%.3d), or -1 */ |
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44 int realsz; /* field size expanded by decimal precision */ |
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45 int size; /* size of converted field or string */ |
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46 int width; /* width from format (%8d), or 0 */ |
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47 char sign; /* sign prefix (' ', '+', '-', or \0) */ |
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48 char softsign; /* temporary negative sign for floats */ |
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49 char *digs; /* digits for [diouxX] conversion */ |
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50 char buf[BUF]; /* space for %c, %[diouxX], %[eEfgG] */ |
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51 |
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52 fmt = fmt0; |
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53 digs = "0123456789abcdef"; |
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54 for (cnt = 0;; ++fmt) { |
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55 for (; (ch = *fmt) && ch != '%'; ++cnt, ++fmt) |
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56 PUTC(ch); |
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57 if (!ch) |
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58 return (cnt); |
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59 |
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60 flags = 0; dprec = 0; width = 0; |
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61 prec = -1; |
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62 sign = '\0'; |
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63 |
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64 rflag: switch (*++fmt) { |
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65 case ' ': |
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66 /* |
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67 * ``If the space and + flags both appear, the space |
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68 * flag will be ignored.'' |
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69 * -- ANSI X3J11 |
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70 */ |
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71 if (!sign) |
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72 sign = ' '; |
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73 goto rflag; |
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74 case '#': |
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75 flags |= ALT; |
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76 goto rflag; |
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77 case '*': |
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78 /* |
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79 * ``A negative field width argument is taken as a |
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80 * - flag followed by a positive field width.'' |
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81 * -- ANSI X3J11 |
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82 * They don't exclude field widths read from args. |
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83 */ |
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84 if ((width = va_arg(argp, int)) >= 0) |
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85 goto rflag; |
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86 width = -width; |
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87 /* FALLTHROUGH */ |
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88 case '-': |
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89 flags |= LADJUST; |
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90 goto rflag; |
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91 case '+': |
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92 sign = '+'; |
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93 goto rflag; |
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94 case '.': |
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95 if (*++fmt == '*') |
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96 n = va_arg(argp, int); |
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97 else { |
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98 n = 0; |
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99 while (isascii(*fmt) && isdigit(*fmt)) |
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100 n = 10 * n + todigit(*fmt++); |
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101 --fmt; |
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102 } |
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103 prec = n < 0 ? -1 : n; |
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104 goto rflag; |
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105 case '0': |
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106 /* |
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107 * ``Note that 0 is taken as a flag, not as the |
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108 * beginning of a field width.'' |
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109 * -- ANSI X3J11 |
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110 */ |
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111 flags |= ZEROPAD; |
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112 goto rflag; |
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113 case '1': case '2': case '3': case '4': |
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114 case '5': case '6': case '7': case '8': case '9': |
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115 n = 0; |
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116 do { |
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117 n = 10 * n + todigit(*fmt); |
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118 } while (isascii(*++fmt) && isdigit(*fmt)); |
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119 width = n; |
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120 --fmt; |
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121 goto rflag; |
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122 case 'L': |
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123 flags |= LONGDBL; |
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124 goto rflag; |
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beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
125 case 'h': |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
126 flags |= SHORTINT; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
127 goto rflag; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
128 case 'l': |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
129 flags |= LONGINT; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
130 goto rflag; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
131 case 'c': |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
132 *(t = buf) = va_arg(argp, int); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
133 size = 1; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
134 sign = '\0'; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
135 goto pforw; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
136 case 'D': |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
137 flags |= LONGINT; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
138 /*FALLTHROUGH*/ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
139 case 'd': |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
140 case 'i': |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
141 ARG(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
142 if ((long)_ulong < 0) { |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
143 _ulong = -_ulong; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
144 sign = '-'; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
145 } |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
146 base = 10; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
147 goto number; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
148 case 'n': |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
149 if (flags & LONGINT) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
150 *va_arg(argp, long *) = cnt; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
151 else if (flags & SHORTINT) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
152 *va_arg(argp, short *) = cnt; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
153 else |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
154 *va_arg(argp, int *) = cnt; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
155 break; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
156 case 'O': |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
157 flags |= LONGINT; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
158 /*FALLTHROUGH*/ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
159 case 'o': |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
160 ARG(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
161 base = 8; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
162 goto nosign; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
163 case 'p': |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
164 /* |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
165 * ``The argument shall be a pointer to void. The |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
166 * value of the pointer is converted to a sequence |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
167 * of printable characters, in an implementation- |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
168 * defined manner.'' |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
169 * -- ANSI X3J11 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
170 */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
171 /* NOSTRICT */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
172 _ulong = (u_long)va_arg(argp, void *); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
173 base = 16; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
174 goto nosign; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
175 case 's': |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
176 if (!(t = va_arg(argp, char *))) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
177 t = "(null)"; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
178 if (prec >= 0) { |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
179 /* |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
180 * can't use strlen; can only look for the |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
181 * NUL in the first `prec' characters, and |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
182 * strlen() will go further. |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
183 */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
184 char *p; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
185 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
186 for (p = t, size = 0; size < prec; p++, size++) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
187 if (*p == '\0') |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
188 break; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
189 } else |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
190 size = strlen(t); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
191 sign = '\0'; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
192 goto pforw; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
193 case 'U': |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
194 flags |= LONGINT; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
195 /*FALLTHROUGH*/ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
196 case 'u': |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
197 ARG(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
198 base = 10; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
199 goto nosign; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
200 case 'X': |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
201 digs = "0123456789ABCDEF"; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
202 /* FALLTHROUGH */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
203 case 'x': |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
204 ARG(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
205 base = 16; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
206 /* leading 0x/X only if non-zero */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
207 if (flags & ALT && _ulong != 0) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
208 flags |= HEXPREFIX; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
209 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
210 /* unsigned conversions */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
211 nosign: sign = '\0'; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
212 /* |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
213 * ``... diouXx conversions ... if a precision is |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
214 * specified, the 0 flag will be ignored.'' |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
215 * -- ANSI X3J11 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
216 */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
217 number: if ((dprec = prec) >= 0) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
218 flags &= ~ZEROPAD; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
219 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
220 /* |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
221 * ``The result of converting a zero value with an |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
222 * explicit precision of zero is no characters.'' |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
223 * -- ANSI X3J11 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
224 */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
225 t = buf + BUF; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
226 if (_ulong != 0 || prec != 0) { |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
227 do { |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
228 *--t = digs[_ulong % base]; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
229 _ulong /= base; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
230 } while (_ulong); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
231 digs = "0123456789abcdef"; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
232 if (flags & ALT && base == 8 && *t != '0') |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
233 *--t = '0'; /* octal leading 0 */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
234 } |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
235 size = buf + BUF - t; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
236 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
237 pforw: |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
238 /* |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
239 * All reasonable formats wind up here. At this point, |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
240 * `t' points to a string which (if not flags&LADJUST) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
241 * should be padded out to `width' places. If |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
242 * flags&ZEROPAD, it should first be prefixed by any |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
243 * sign or other prefix; otherwise, it should be blank |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
244 * padded before the prefix is emitted. After any |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
245 * left-hand padding and prefixing, emit zeroes |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
246 * required by a decimal [diouxX] precision, then print |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
247 * the string proper, then emit zeroes required by any |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
248 * leftover floating precision; finally, if LADJUST, |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
249 * pad with blanks. |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
250 */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
251 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
252 /* |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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253 * compute actual size, so we know how much to pad |
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254 * fieldsz excludes decimal prec; realsz includes it |
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255 */ |
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256 fieldsz = size; |
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257 if (sign) |
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258 fieldsz++; |
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259 if (flags & HEXPREFIX) |
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260 fieldsz += 2; |
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261 realsz = dprec > fieldsz ? dprec : fieldsz; |
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262 |
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263 /* right-adjusting blank padding */ |
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264 if ((flags & (LADJUST|ZEROPAD)) == 0 && width) |
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265 for (n = realsz; n < width; n++) |
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266 PUTC(' '); |
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267 /* prefix */ |
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268 if (sign) |
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269 PUTC(sign); |
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270 if (flags & HEXPREFIX) { |
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271 PUTC('0'); |
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272 PUTC((char)*fmt); |
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273 } |
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274 /* right-adjusting zero padding */ |
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275 if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD) |
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276 for (n = realsz; n < width; n++) |
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277 PUTC('0'); |
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278 /* leading zeroes from decimal precision */ |
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279 for (n = fieldsz; n < dprec; n++) |
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280 PUTC('0'); |
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281 |
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282 for (n = size; --n >= 0; ) |
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283 PUTC(*t++); |
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284 /* left-adjusting padding (always blank) */ |
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285 if (flags & LADJUST) |
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286 for (n = realsz; n < width; n++) |
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287 PUTC(' '); |
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288 /* finally, adjust cnt */ |
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289 cnt += width > realsz ? width : realsz; |
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290 break; |
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291 case '\0': /* "%?" prints ?, unless ? is NULL */ |
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292 return (cnt); |
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293 default: |
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294 PUTC((char)*fmt); |
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295 cnt++; |
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296 } |
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297 } |
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298 /* NOTREACHED */ |
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299 } |