1 | /* $Header: /afs/dev.mit.edu/source/repository/third/tcsh/tc.printf.c,v 1.1.1.2 1998-10-03 21:10:14 danw Exp $ */ |
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2 | /* |
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3 | * tc.printf.c: A public-domain, minimal printf/sprintf routine that prints |
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4 | * through the putchar() routine. Feel free to use for |
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5 | * anything... -- 7/17/87 Paul Placeway |
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6 | */ |
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7 | /*- |
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8 | * Copyright (c) 1980, 1991 The Regents of the University of California. |
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9 | * All rights reserved. |
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10 | * |
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11 | * Redistribution and use in source and binary forms, with or without |
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12 | * modification, are permitted provided that the following conditions |
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13 | * are met: |
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14 | * 1. Redistributions of source code must retain the above copyright |
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15 | * notice, this list of conditions and the following disclaimer. |
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16 | * 2. Redistributions in binary form must reproduce the above copyright |
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17 | * notice, this list of conditions and the following disclaimer in the |
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18 | * documentation and/or other materials provided with the distribution. |
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19 | * 3. All advertising materials mentioning features or use of this software |
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20 | * must display the following acknowledgement: |
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21 | * This product includes software developed by the University of |
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22 | * California, Berkeley and its contributors. |
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23 | * 4. Neither the name of the University nor the names of its contributors |
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24 | * may be used to endorse or promote products derived from this software |
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25 | * without specific prior written permission. |
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26 | * |
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27 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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28 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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29 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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30 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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31 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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32 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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33 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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34 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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35 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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36 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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37 | * SUCH DAMAGE. |
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38 | */ |
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39 | #include "sh.h" |
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40 | |
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41 | RCSID("$Id: tc.printf.c,v 1.1.1.2 1998-10-03 21:10:14 danw Exp $") |
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42 | |
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43 | #ifdef lint |
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44 | #undef va_arg |
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45 | #define va_arg(a, b) (a ? (b) 0 : (b) 0) |
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46 | #endif |
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47 | |
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48 | #define INF 32766 /* should be bigger than any field to print */ |
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49 | |
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50 | static char buf[128]; |
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51 | |
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52 | static void xaddchar __P((int)); |
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53 | static void doprnt __P((void (*) __P((int)), const char *, va_list)); |
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54 | |
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55 | static void |
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56 | doprnt(addchar, sfmt, ap) |
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57 | void (*addchar) __P((int)); |
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58 | const char *sfmt; |
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59 | va_list ap; |
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60 | { |
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61 | register char *bp; |
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62 | register const char *f; |
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63 | #ifdef SHORT_STRINGS |
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64 | register Char *Bp; |
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65 | #endif /* SHORT_STRINGS */ |
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66 | register long l; |
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67 | register unsigned long u; |
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68 | register int i; |
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69 | register int fmt; |
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70 | register unsigned char pad = ' '; |
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71 | int flush_left = 0, f_width = 0, prec = INF, hash = 0, do_long = 0; |
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72 | int sign = 0; |
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73 | int attributes = 0; |
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74 | |
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75 | |
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76 | f = sfmt; |
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77 | for (; *f; f++) { |
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78 | if (*f != '%') { /* then just out the char */ |
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79 | (*addchar) ((int) (((unsigned char)*f) | attributes)); |
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80 | } |
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81 | else { |
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82 | f++; /* skip the % */ |
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83 | |
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84 | if (*f == '-') { /* minus: flush left */ |
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85 | flush_left = 1; |
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86 | f++; |
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87 | } |
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88 | |
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89 | if (*f == '0' || *f == '.') { |
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90 | /* padding with 0 rather than blank */ |
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91 | pad = '0'; |
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92 | f++; |
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93 | } |
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94 | if (*f == '*') { /* field width */ |
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95 | f_width = va_arg(ap, int); |
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96 | f++; |
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97 | } |
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98 | else if (Isdigit((unsigned char) *f)) { |
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99 | f_width = atoi(f); |
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100 | while (Isdigit((unsigned char) *f)) |
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101 | f++; /* skip the digits */ |
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102 | } |
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103 | |
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104 | if (*f == '.') { /* precision */ |
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105 | f++; |
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106 | if (*f == '*') { |
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107 | prec = va_arg(ap, int); |
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108 | f++; |
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109 | } |
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110 | else if (Isdigit((unsigned char) *f)) { |
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111 | prec = atoi((char *) f); |
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112 | while (Isdigit((unsigned char) *f)) |
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113 | f++; /* skip the digits */ |
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114 | } |
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115 | } |
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116 | |
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117 | if (*f == '#') { /* alternate form */ |
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118 | hash = 1; |
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119 | f++; |
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120 | } |
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121 | |
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122 | if (*f == 'l') { /* long format */ |
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123 | do_long = 1; |
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124 | f++; |
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125 | } |
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126 | |
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127 | fmt = (unsigned char) *f; |
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128 | if (fmt != 'S' && fmt != 'Q' && Isupper(fmt)) { |
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129 | do_long = 1; |
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130 | fmt = Tolower(fmt); |
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131 | } |
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132 | bp = buf; |
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133 | switch (fmt) { /* do the format */ |
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134 | case 'd': |
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135 | if (do_long) |
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136 | l = va_arg(ap, long); |
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137 | else |
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138 | l = (long) (va_arg(ap, int)); |
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139 | if (l < 0) { |
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140 | sign = 1; |
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141 | l = -l; |
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142 | } |
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143 | do { |
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144 | *bp++ = (char) (l % 10) + '0'; |
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145 | } while ((l /= 10) > 0); |
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146 | if (sign) |
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147 | *bp++ = '-'; |
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148 | f_width = f_width - (bp - buf); |
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149 | if (!flush_left) |
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150 | while (f_width-- > 0) |
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151 | (*addchar) ((int) (pad | attributes)); |
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152 | for (bp--; bp >= buf; bp--) |
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153 | (*addchar) ((int) (((unsigned char) *bp) | attributes)); |
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154 | if (flush_left) |
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155 | while (f_width-- > 0) |
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156 | (*addchar) ((int) (' ' | attributes)); |
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157 | break; |
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158 | |
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159 | case 'o': |
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160 | case 'x': |
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161 | case 'u': |
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162 | if (do_long) |
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163 | u = va_arg(ap, unsigned long); |
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164 | else |
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165 | u = (unsigned long) (va_arg(ap, unsigned int)); |
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166 | if (fmt == 'u') { /* unsigned decimal */ |
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167 | do { |
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168 | *bp++ = (char) (u % 10) + '0'; |
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169 | } while ((u /= 10) > 0); |
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170 | } |
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171 | else if (fmt == 'o') { /* octal */ |
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172 | do { |
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173 | *bp++ = (char) (u % 8) + '0'; |
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174 | } while ((u /= 8) > 0); |
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175 | if (hash) |
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176 | *bp++ = '0'; |
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177 | } |
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178 | else if (fmt == 'x') { /* hex */ |
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179 | do { |
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180 | i = u % 16; |
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181 | if (i < 10) |
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182 | *bp++ = i + '0'; |
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183 | else |
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184 | *bp++ = i - 10 + 'a'; |
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185 | } while ((u /= 16) > 0); |
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186 | if (hash) { |
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187 | *bp++ = 'x'; |
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188 | *bp++ = '0'; |
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189 | } |
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190 | } |
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191 | i = f_width - (bp - buf); |
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192 | if (!flush_left) |
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193 | while (i-- > 0) |
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194 | (*addchar) ((int) (pad | attributes)); |
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195 | for (bp--; bp >= buf; bp--) |
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196 | (*addchar) ((int) (((unsigned char) *bp) | attributes)); |
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197 | if (flush_left) |
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198 | while (i-- > 0) |
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199 | (*addchar) ((int) (' ' | attributes)); |
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200 | break; |
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201 | |
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202 | |
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203 | case 'c': |
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204 | i = va_arg(ap, int); |
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205 | (*addchar) ((int) (i | attributes)); |
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206 | break; |
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207 | |
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208 | case 'S': |
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209 | case 'Q': |
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210 | Bp = va_arg(ap, Char *); |
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211 | if (!Bp) { |
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212 | bp = NULL; |
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213 | goto lcase_s; |
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214 | } |
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215 | f_width = f_width - Strlen(Bp); |
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216 | if (!flush_left) |
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217 | while (f_width-- > 0) |
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218 | (*addchar) ((int) (pad | attributes)); |
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219 | for (i = 0; *Bp && i < prec; i++) { |
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220 | if (fmt == 'Q' && *Bp & QUOTE) |
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221 | (*addchar) ((int) ('\\' | attributes)); |
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222 | (*addchar) ((int) ((*Bp & TRIM) | attributes)); |
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223 | Bp++; |
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224 | } |
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225 | if (flush_left) |
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226 | while (f_width-- > 0) |
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227 | (*addchar) ((int) (' ' | attributes)); |
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228 | break; |
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229 | |
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230 | case 's': |
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231 | case 'q': |
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232 | bp = va_arg(ap, char *); |
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233 | lcase_s: |
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234 | if (!bp) |
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235 | bp = "(nil)"; |
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236 | f_width = f_width - strlen((char *) bp); |
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237 | if (!flush_left) |
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238 | while (f_width-- > 0) |
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239 | (*addchar) ((int) (pad | attributes)); |
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240 | for (i = 0; *bp && i < prec; i++) { |
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241 | if (fmt == 'q' && *bp & QUOTE) |
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242 | (*addchar) ((int) ('\\' | attributes)); |
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243 | (*addchar) ((int) (((unsigned char) *bp & TRIM) | |
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244 | attributes)); |
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245 | bp++; |
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246 | } |
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247 | if (flush_left) |
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248 | while (f_width-- > 0) |
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249 | (*addchar) ((int) (' ' | attributes)); |
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250 | break; |
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251 | |
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252 | case 'a': |
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253 | attributes = va_arg(ap, int); |
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254 | break; |
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255 | |
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256 | case '%': |
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257 | (*addchar) ((int) ('%' | attributes)); |
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258 | break; |
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259 | |
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260 | default: |
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261 | break; |
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262 | } |
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263 | flush_left = 0, f_width = 0, prec = INF, hash = 0, do_long = 0; |
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264 | sign = 0; |
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265 | pad = ' '; |
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266 | } |
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267 | } |
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268 | } |
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269 | |
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270 | |
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271 | static char *xstring, *xestring; |
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272 | static void |
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273 | xaddchar(c) |
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274 | int c; |
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275 | { |
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276 | if (xestring == xstring) |
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277 | *xstring = '\0'; |
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278 | else |
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279 | *xstring++ = (char) c; |
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280 | } |
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281 | |
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282 | |
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283 | pret_t |
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284 | /*VARARGS*/ |
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285 | #ifdef FUNCPROTO |
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286 | xsnprintf(char *str, size_t size, const char *fmt, ...) |
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287 | #else |
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288 | xsnprintf(va_alist) |
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289 | va_dcl |
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290 | #endif |
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291 | { |
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292 | va_list va; |
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293 | #ifdef FUNCPROTO |
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294 | va_start(va, fmt); |
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295 | #else |
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296 | char *str, *fmt; |
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297 | size_t size; |
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298 | |
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299 | va_start(va); |
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300 | str = va_arg(va, char *); |
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301 | size = va_arg(va, size_t); |
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302 | fmt = va_arg(va, char *); |
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303 | #endif |
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304 | |
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305 | xstring = str; |
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306 | xestring = str + size - 1; |
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307 | doprnt(xaddchar, fmt, va); |
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308 | va_end(va); |
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309 | *xstring++ = '\0'; |
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310 | #ifdef PURIFY |
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311 | return 1; |
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312 | #endif |
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313 | } |
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314 | |
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315 | pret_t |
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316 | /*VARARGS*/ |
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317 | #ifdef FUNCPROTO |
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318 | xprintf(const char *fmt, ...) |
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319 | #else |
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320 | xprintf(va_alist) |
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321 | va_dcl |
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322 | #endif |
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323 | { |
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324 | va_list va; |
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325 | #ifdef FUNCPROTO |
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326 | va_start(va, fmt); |
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327 | #else |
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328 | char *fmt; |
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329 | |
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330 | va_start(va); |
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331 | fmt = va_arg(va, char *); |
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332 | #endif |
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333 | doprnt(xputchar, fmt, va); |
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334 | va_end(va); |
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335 | #ifdef PURIFY |
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336 | return 1; |
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337 | #endif |
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338 | } |
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339 | |
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340 | |
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341 | pret_t |
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342 | xvprintf(fmt, va) |
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343 | const char *fmt; |
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344 | va_list va; |
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345 | { |
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346 | doprnt(xputchar, fmt, va); |
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347 | #ifdef PURIFY |
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348 | return 1; |
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349 | #endif |
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350 | } |
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351 | |
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352 | pret_t |
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353 | xvsnprintf(str, size, fmt, va) |
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354 | char *str; |
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355 | size_t size; |
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356 | const char *fmt; |
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357 | va_list va; |
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358 | { |
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359 | xstring = str; |
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360 | xestring = str + size - 1; |
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361 | doprnt(xaddchar, fmt, va); |
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362 | *xstring++ = '\0'; |
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363 | #ifdef PURIFY |
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364 | return 1; |
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365 | #endif |
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366 | } |
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367 | |
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368 | |
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369 | |
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370 | #ifdef PURIFY |
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371 | /* Purify uses (some of..) the following functions to output memory-use |
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372 | * debugging info. Given all the messing with file descriptors that |
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373 | * tcsh does, the easiest way I could think of to get it (Purify) to |
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374 | * print anything was by replacing some standard functions with |
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375 | * ones that do tcsh output directly - see dumb hook in doreaddirs() |
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376 | * (sh.dir.c) -sg |
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377 | */ |
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378 | #ifndef FILE |
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379 | #define FILE int |
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380 | #endif |
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381 | int |
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382 | #ifdef FUNCPROTO |
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383 | fprintf(FILE *fp, const char* fmt, ...) |
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384 | #else |
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385 | fprintf(va_alist) |
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386 | va_dcl |
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387 | #endif |
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388 | { |
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389 | va_list va; |
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390 | #ifdef FUNCPROTO |
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391 | va_start(va, fmt); |
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392 | #else |
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393 | FILE *fp; |
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394 | const char *fmt; |
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395 | |
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396 | va_start(va); |
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397 | fp = va_arg(va, FILE *); |
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398 | fmt = va_arg(va, const char *); |
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399 | #endif |
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400 | doprnt(xputchar, fmt, va); |
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401 | va_end(va); |
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402 | return 1; |
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403 | } |
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404 | |
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405 | int |
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406 | vfprintf(fp, fmt, va) |
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407 | FILE *fp; |
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408 | const char *fmt; |
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409 | va_list va; |
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410 | { |
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411 | doprnt(xputchar, fmt, va); |
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412 | return 1; |
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413 | } |
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414 | |
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415 | #endif /* PURIFY */ |
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