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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 | --- err.c.orig 2011-02-15 16:29:48.000000000 -0800 +++ err.c 2011-02-15 18:01:51.000000000 -0800 @@ -40,12 +40,107 @@ __FBSDID("$FreeBSD: src/lib/libc/gen/err #include <stdio.h> #include <stdlib.h> #include <string.h> +#include <vis.h> #include "un-namespace.h" +#ifdef __BLOCKS__ +#include <Block.h> +#endif /* __BLOCKS__ */ #include "libc_private.h" -static FILE *err_file; /* file to use for error output */ -static void (*err_exit)(int); +#define ERR_EXIT_UNDEF 0 +#ifdef __BLOCKS__ +#define ERR_EXIT_BLOCK 1 +#endif /* __BLOCKS__ */ +#define ERR_EXIT_FUNC 2 +struct _e_err_exit { + unsigned int type; +#ifdef __BLOCKS__ + union { +#endif /* __BLOCKS__ */ + void (*func)(int); +#ifdef __BLOCKS__ + void (^block)(int); + }; +#endif /* __BLOCKS__ */ +}; + +#ifdef BUILDING_VARIANT + +__private_extern__ FILE *_e_err_file; /* file to use for error output */ +__private_extern__ struct _e_err_exit _e_err_exit; +__private_extern__ void _e_visprintf(FILE * __restrict, const char * __restrict, va_list); + +#else /* !BUILDING_VARIANT */ + +__private_extern__ FILE *_e_err_file = NULL; /* file to use for error output */ +__private_extern__ struct _e_err_exit _e_err_exit = {ERR_EXIT_UNDEF}; + +/* + * zero means pass as is + * 255 means use \nnn (octal) + * otherwise use \x (x is value) + * (NUL isn't used) + */ +static unsigned char escape[256] = { + /* NUL */ + 0, /* Unused: strings can't contain nulls */ + /* SOH STX ETX EOT ENQ ACK BEL */ + 255, 255, 255, 255, 255, 255, 'a', + /* BS HT NL VT NP CR SO SI */ + 'b', 0, 0, 'v', 'f', 'r', 255, 255, + /* DLE DC1 DC2 DC3 DC4 NAK SYN ETB */ + 255, 255, 255, 255, 255, 255, 255, 255, + /* CAN EM SUB ESC FS GS RS US */ + 255, 255, 255, 255, 255, 255, 255, 255, + /* the rest are zero */ +}; + +/* + * Make characters visible. If we can't allocate enough + * memory, we fall back on vfprintf(). + */ +__private_extern__ void +_e_visprintf(FILE * __restrict stream, const char * __restrict format, va_list ap) +{ + int failed = 0; + char *str, *visstr; + va_list backup; + + va_copy(backup, ap); + vasprintf(&str, format, ap); + if (str != NULL) { + if ((visstr = malloc(4 * strlen(str) + 1)) != NULL) { + unsigned char *fp = (unsigned char *)str; + unsigned char *tp = (unsigned char *)visstr; + while(*fp) { + switch(escape[*fp]) { + case 0: + *tp++ = *fp; + break; + case 255: + sprintf((char *)tp, "\\%03o", *fp); + tp += 4; + break; + default: + *tp++ = '\\'; + *tp++ = escape[*fp]; + break; + } + fp++; + } + *tp = 0; + fputs(visstr, stream); + free(visstr); + } else + failed = 1; + free(str); + } else + failed = 1; + if (failed) + vfprintf(stream, format, backup); + va_end(backup); +} /* * This is declared to take a `void *' so that the caller is not required @@ -56,16 +151,27 @@ void err_set_file(void *fp) { if (fp) - err_file = fp; + _e_err_file = fp; else - err_file = stderr; + _e_err_file = stderr; } void err_set_exit(void (*ef)(int)) { - err_exit = ef; + _e_err_exit.type = ERR_EXIT_FUNC; + _e_err_exit.func = ef; +} + +#ifdef __BLOCKS__ +void +err_set_exit_b(void (^ef)(int)) +{ + _e_err_exit.type = ERR_EXIT_BLOCK; + _e_err_exit.block = Block_copy(ef); } +#endif /* __BLOCKS__ */ +#endif /* !BUILDING_VARIANT */ __weak_reference(_err, err); @@ -99,16 +205,21 @@ errc(int eval, int code, const char *fmt void verrc(int eval, int code, const char *fmt, va_list ap) { - if (err_file == 0) + if (_e_err_file == 0) err_set_file((FILE *)0); - fprintf(err_file, "%s: ", _getprogname()); + fprintf(_e_err_file, "%s: ", _getprogname()); if (fmt != NULL) { - vfprintf(err_file, fmt, ap); - fprintf(err_file, ": "); + _e_visprintf(_e_err_file, fmt, ap); + fprintf(_e_err_file, ": "); } - fprintf(err_file, "%s\n", strerror(code)); - if (err_exit) - err_exit(eval); + fprintf(_e_err_file, "%s\n", strerror(code)); + if (_e_err_exit.type) +#ifdef __BLOCKS__ + if (_e_err_exit.type == ERR_EXIT_BLOCK) + _e_err_exit.block(eval); + else +#endif /* __BLOCKS__ */ + _e_err_exit.func(eval); exit(eval); } @@ -124,14 +235,19 @@ errx(int eval, const char *fmt, ...) void verrx(int eval, const char *fmt, va_list ap) { - if (err_file == 0) + if (_e_err_file == 0) err_set_file((FILE *)0); - fprintf(err_file, "%s: ", _getprogname()); + fprintf(_e_err_file, "%s: ", _getprogname()); if (fmt != NULL) - vfprintf(err_file, fmt, ap); - fprintf(err_file, "\n"); - if (err_exit) - err_exit(eval); + _e_visprintf(_e_err_file, fmt, ap); + fprintf(_e_err_file, "\n"); + if (_e_err_exit.type) +#ifdef __BLOCKS__ + if (_e_err_exit.type == ERR_EXIT_BLOCK) + _e_err_exit.block(eval); + else +#endif /* __BLOCKS__ */ + _e_err_exit.func(eval); exit(eval); } @@ -164,14 +280,14 @@ warnc(int code, const char *fmt, ...) void vwarnc(int code, const char *fmt, va_list ap) { - if (err_file == 0) + if (_e_err_file == 0) err_set_file((FILE *)0); - fprintf(err_file, "%s: ", _getprogname()); + fprintf(_e_err_file, "%s: ", _getprogname()); if (fmt != NULL) { - vfprintf(err_file, fmt, ap); - fprintf(err_file, ": "); + _e_visprintf(_e_err_file, fmt, ap); + fprintf(_e_err_file, ": "); } - fprintf(err_file, "%s\n", strerror(code)); + fprintf(_e_err_file, "%s\n", strerror(code)); } void @@ -186,10 +302,10 @@ warnx(const char *fmt, ...) void vwarnx(const char *fmt, va_list ap) { - if (err_file == 0) + if (_e_err_file == 0) err_set_file((FILE *)0); - fprintf(err_file, "%s: ", _getprogname()); + fprintf(_e_err_file, "%s: ", _getprogname()); if (fmt != NULL) - vfprintf(err_file, fmt, ap); - fprintf(err_file, "\n"); + _e_visprintf(_e_err_file, fmt, ap); + fprintf(_e_err_file, "\n"); } |