1 /* 2 * Copyright (c) 2014-2018, Juniper Networks, Inc. 3 * All rights reserved. 4 * This SOFTWARE is licensed under the LICENSE provided in the 5 * ../Copyright file. By downloading, installing, copying, or otherwise 6 * using the SOFTWARE, you agree to be bound by the terms of that 7 * LICENSE. 8 * Phil Shafer, July 2014 9 */ 10 11 /** 12 * libxo provides a means of generating text, XML, JSON, and HTML output 13 * using a single set of function calls, maximizing the value of output 14 * while minimizing the cost/impact on the code. 15 * 16 * Full documentation is available in ./doc/libxo.txt or online at: 17 * http://juniper.github.io/libxo/libxo-manual.html 18 */ 19 20 #ifndef INCLUDE_XO_H 21 #define INCLUDE_XO_H 22 23 #include <stdio.h> 24 #include <sys/types.h> 25 #include <stdarg.h> 26 #include <limits.h> 27 #include <stdlib.h> 28 #include <errno.h> 29 30 #ifdef __dead2 31 #define NORETURN __dead2 32 #else 33 #define NORETURN 34 #endif /* __dead2 */ 35 36 /* 37 * Normally we'd use the HAVE_PRINTFLIKE define triggered by the 38 * --enable-printflike option to configure, but we don't install 39 * our internal "xoconfig.h", and I'd rather not. Taking the 40 * coward's path, we'll turn it on inside a #if that allows 41 * others to turn it off where needed. Not ideal, but functional. 42 */ 43 #if !defined(NO_PRINTFLIKE) 44 #if defined(__linux) && !defined(__printflike) 45 #define __printflike(_x, _y) __attribute__((__format__ (__printf__, _x, _y))) 46 #endif 47 #define PRINTFLIKE(_x, _y) __printflike(_x, _y) 48 #else 49 #define PRINTFLIKE(_x, _y) 50 #endif /* NO_PRINTFLIKE */ 51 52 /** Formatting types */ 53 typedef unsigned short xo_style_t; 54 #define XO_STYLE_TEXT 0 /** Generate text output */ 55 #define XO_STYLE_XML 1 /** Generate XML output */ 56 #define XO_STYLE_JSON 2 /** Generate JSON output */ 57 #define XO_STYLE_HTML 3 /** Generate HTML output */ 58 #define XO_STYLE_SDPARAMS 4 /* Generate syslog structured data params */ 59 #define XO_STYLE_ENCODER 5 /* Generate calls to external encoder */ 60 61 /** Flags for libxo */ 62 typedef unsigned long long xo_xof_flags_t; 63 #define XOF_BIT(_n) ((xo_xof_flags_t) 1 << (_n)) 64 #define XOF_CLOSE_FP XOF_BIT(0) /** Close file pointer on xo_close() */ 65 #define XOF_PRETTY XOF_BIT(1) /** Make 'pretty printed' output */ 66 #define XOF_LOG_SYSLOG XOF_BIT(2) /** Log (on stderr) our syslog content */ 67 #define XOF_RESV3 XOF_BIT(3) /* Unused */ 68 69 #define XOF_WARN XOF_BIT(4) /** Generate warnings for broken calls */ 70 #define XOF_XPATH XOF_BIT(5) /** Emit XPath attributes in HTML */ 71 #define XOF_INFO XOF_BIT(6) /** Emit additional info fields (HTML) */ 72 #define XOF_WARN_XML XOF_BIT(7) /** Emit warnings in XML (on stdout) */ 73 74 #define XOF_NO_ENV XOF_BIT(8) /** Don't look at LIBXO_OPTIONS env var */ 75 #define XOF_NO_VA_ARG XOF_BIT(9) /** Don't advance va_list w/ va_arg() */ 76 #define XOF_DTRT XOF_BIT(10) /** Enable "do the right thing" mode */ 77 #define XOF_KEYS XOF_BIT(11) /** Flag 'key' fields for xml and json */ 78 79 #define XOF_IGNORE_CLOSE XOF_BIT(12) /** Ignore errors on close tags */ 80 #define XOF_NOT_FIRST XOF_BIT(13) /* Not the first item (JSON) */ 81 #define XOF_NO_LOCALE XOF_BIT(14) /** Don't bother with locale */ 82 #define XOF_RESV15 XOF_BIT(15) /* Unused */ 83 84 #define XOF_NO_TOP XOF_BIT(16) /** Don't emit the top braces in JSON */ 85 #define XOF_RESV17 XOF_BIT(17) /* Unused */ 86 #define XOF_UNITS XOF_BIT(18) /** Encode units in XML */ 87 #define XOF_RESV19 XOF_BIT(19) /* Unused */ 88 89 #define XOF_UNDERSCORES XOF_BIT(20) /** Replace dashes with underscores (JSON)*/ 90 #define XOF_COLUMNS XOF_BIT(21) /** xo_emit should return a column count */ 91 #define XOF_FLUSH XOF_BIT(22) /** Flush after each xo_emit call */ 92 #define XOF_FLUSH_LINE XOF_BIT(23) /** Flush after each newline */ 93 94 #define XOF_NO_CLOSE XOF_BIT(24) /** xo_finish won't close open elements */ 95 #define XOF_COLOR_ALLOWED XOF_BIT(25) /** Allow color/effects to be enabled */ 96 #define XOF_COLOR XOF_BIT(26) /** Enable color and effects */ 97 #define XOF_NO_HUMANIZE XOF_BIT(27) /** Block the {h:} modifier */ 98 99 #define XOF_LOG_GETTEXT XOF_BIT(28) /** Log (stderr) gettext lookup strings */ 100 #define XOF_UTF8 XOF_BIT(29) /** Force text output to be UTF8 */ 101 #define XOF_RETAIN_ALL XOF_BIT(30) /** Force use of XOEF_RETAIN */ 102 #define XOF_RETAIN_NONE XOF_BIT(31) /** Prevent use of XOEF_RETAIN */ 103 104 #define XOF_COLOR_MAP XOF_BIT(32) /** Color map has been initialized */ 105 #define XOF_CONTINUATION XOF_BIT(33) /** Continuation of previous line */ 106 107 typedef unsigned xo_emit_flags_t; /* Flags to xo_emit() and friends */ 108 #define XOEF_RETAIN (1<<0) /* Retain parsed formatting information */ 109 110 /* 111 * The xo_info_t structure provides a mapping between names and 112 * additional data emitted via HTML. 113 */ 114 typedef struct xo_info_s { 115 const char *xi_name; /* Name of the element */ 116 const char *xi_type; /* Type of field */ 117 const char *xi_help; /* Description of field */ 118 } xo_info_t; 119 120 #define XO_INFO_NULL NULL, NULL, NULL /* Use '{ XO_INFO_NULL }' to end lists */ 121 122 struct xo_handle_s; /* Opaque structure forward */ 123 typedef struct xo_handle_s xo_handle_t; /* Handle for XO output */ 124 125 /* 126 * Early versions of the API used "int" instead of "size_t" for buffer 127 * sizes. We want to fix this but allow for backwards compatibility 128 * where needed. 129 */ 130 #ifdef XO_USE_INT_RETURN_CODES 131 typedef int xo_ssize_t; /* Buffer size */ 132 #else /* XO_USE_INT_RETURN_CODES */ 133 typedef ssize_t xo_ssize_t; /* Buffer size */ 134 #endif /* XO_USE_INT_RETURN_CODES */ 135 136 typedef xo_ssize_t (*xo_write_func_t)(void *, const char *); 137 typedef void (*xo_close_func_t)(void *); 138 typedef int (*xo_flush_func_t)(void *); 139 typedef void *(*xo_realloc_func_t)(void *, size_t); 140 typedef void (*xo_free_func_t)(void *); 141 142 /* 143 * The formatter function mirrors "vsnprintf", with an additional argument 144 * of the xo handle. The caller should return the number of bytes _needed_ 145 * to fit the data, even if this exceeds 'len'. 146 */ 147 typedef xo_ssize_t (*xo_formatter_t)(xo_handle_t *, char *, xo_ssize_t, 148 const char *, va_list); 149 typedef void (*xo_checkpointer_t)(xo_handle_t *, va_list, int); 150 151 xo_handle_t * 152 xo_create (xo_style_t style, xo_xof_flags_t flags); 153 154 xo_handle_t * 155 xo_create_to_file (FILE *fp, xo_style_t style, xo_xof_flags_t flags); 156 157 void 158 xo_destroy (xo_handle_t *xop); 159 160 void 161 xo_set_writer (xo_handle_t *xop, void *opaque, xo_write_func_t write_func, 162 xo_close_func_t close_func, xo_flush_func_t flush_func); 163 164 void 165 xo_set_allocator (xo_realloc_func_t realloc_func, xo_free_func_t free_func); 166 167 void 168 xo_set_style (xo_handle_t *xop, xo_style_t style); 169 170 xo_style_t 171 xo_get_style (xo_handle_t *xop); 172 173 int 174 xo_set_style_name (xo_handle_t *xop, const char *style); 175 176 int 177 xo_set_options (xo_handle_t *xop, const char *input); 178 179 xo_xof_flags_t 180 xo_get_flags (xo_handle_t *xop); 181 182 void 183 xo_set_flags (xo_handle_t *xop, xo_xof_flags_t flags); 184 185 void 186 xo_clear_flags (xo_handle_t *xop, xo_xof_flags_t flags); 187 188 int 189 xo_set_file_h (xo_handle_t *xop, FILE *fp); 190 191 int 192 xo_set_file (FILE *fp); 193 194 void 195 xo_set_info (xo_handle_t *xop, xo_info_t *infop, int count); 196 197 void 198 xo_set_formatter (xo_handle_t *xop, xo_formatter_t func, xo_checkpointer_t); 199 200 void 201 xo_set_depth (xo_handle_t *xop, int depth); 202 203 xo_ssize_t 204 xo_emit_hv (xo_handle_t *xop, const char *fmt, va_list vap); 205 206 xo_ssize_t 207 xo_emit_h (xo_handle_t *xop, const char *fmt, ...); 208 209 xo_ssize_t 210 xo_emit (const char *fmt, ...); 211 212 xo_ssize_t 213 xo_emit_hvf (xo_handle_t *xop, xo_emit_flags_t flags, 214 const char *fmt, va_list vap); 215 216 xo_ssize_t 217 xo_emit_hf (xo_handle_t *xop, xo_emit_flags_t flags, const char *fmt, ...); 218 219 xo_ssize_t 220 xo_emit_f (xo_emit_flags_t flags, const char *fmt, ...); 221 222 PRINTFLIKE(2, 0) 223 static inline xo_ssize_t 224 xo_emit_hvp (xo_handle_t *xop, const char *fmt, va_list vap) 225 { 226 return xo_emit_hv(xop, fmt, vap); 227 } 228 229 PRINTFLIKE(2, 3) 230 static inline xo_ssize_t 231 xo_emit_hp (xo_handle_t *xop, const char *fmt, ...) 232 { 233 va_list vap; 234 va_start(vap, fmt); 235 xo_ssize_t rc = xo_emit_hv(xop, fmt, vap); 236 va_end(vap); 237 return rc; 238 } 239 240 PRINTFLIKE(1, 2) 241 static inline xo_ssize_t 242 xo_emit_p (const char *fmt, ...) 243 { 244 va_list vap; 245 va_start(vap, fmt); 246 xo_ssize_t rc = xo_emit_hv(NULL, fmt, vap); 247 va_end(vap); 248 return rc; 249 } 250 251 PRINTFLIKE(3, 0) 252 static inline xo_ssize_t 253 xo_emit_hvfp (xo_handle_t *xop, xo_emit_flags_t flags, 254 const char *fmt, va_list vap) 255 { 256 return xo_emit_hvf(xop, flags, fmt, vap); 257 } 258 259 PRINTFLIKE(3, 4) 260 static inline xo_ssize_t 261 xo_emit_hfp (xo_handle_t *xop, xo_emit_flags_t flags, const char *fmt, ...) 262 { 263 va_list vap; 264 va_start(vap, fmt); 265 xo_ssize_t rc = xo_emit_hvf(xop, flags, fmt, vap); 266 va_end(vap); 267 return rc; 268 } 269 270 PRINTFLIKE(2, 3) 271 static inline xo_ssize_t 272 xo_emit_fp (xo_emit_flags_t flags, const char *fmt, ...) 273 { 274 va_list vap; 275 va_start(vap, fmt); 276 xo_ssize_t rc = xo_emit_hvf(NULL, flags, fmt, vap); 277 va_end(vap); 278 return rc; 279 } 280 281 xo_ssize_t 282 xo_open_container_hf (xo_handle_t *xop, xo_xof_flags_t flags, const char *name); 283 284 xo_ssize_t 285 xo_open_container_h (xo_handle_t *xop, const char *name); 286 287 xo_ssize_t 288 xo_open_container (const char *name); 289 290 xo_ssize_t 291 xo_open_container_hd (xo_handle_t *xop, const char *name); 292 293 xo_ssize_t 294 xo_open_container_d (const char *name); 295 296 xo_ssize_t 297 xo_close_container_h (xo_handle_t *xop, const char *name); 298 299 xo_ssize_t 300 xo_close_container (const char *name); 301 302 xo_ssize_t 303 xo_close_container_hd (xo_handle_t *xop); 304 305 xo_ssize_t 306 xo_close_container_d (void); 307 308 xo_ssize_t 309 xo_open_list_hf (xo_handle_t *xop, xo_xof_flags_t flags, const char *name); 310 311 xo_ssize_t 312 xo_open_list_h (xo_handle_t *xop, const char *name); 313 314 xo_ssize_t 315 xo_open_list (const char *name); 316 317 xo_ssize_t 318 xo_open_list_hd (xo_handle_t *xop, const char *name); 319 320 xo_ssize_t 321 xo_open_list_d (const char *name); 322 323 xo_ssize_t 324 xo_close_list_h (xo_handle_t *xop, const char *name); 325 326 xo_ssize_t 327 xo_close_list (const char *name); 328 329 xo_ssize_t 330 xo_close_list_hd (xo_handle_t *xop); 331 332 xo_ssize_t 333 xo_close_list_d (void); 334 335 xo_ssize_t 336 xo_open_instance_hf (xo_handle_t *xop, xo_xof_flags_t flags, const char *name); 337 338 xo_ssize_t 339 xo_open_instance_h (xo_handle_t *xop, const char *name); 340 341 xo_ssize_t 342 xo_open_instance (const char *name); 343 344 xo_ssize_t 345 xo_open_instance_hd (xo_handle_t *xop, const char *name); 346 347 xo_ssize_t 348 xo_open_instance_d (const char *name); 349 350 xo_ssize_t 351 xo_close_instance_h (xo_handle_t *xop, const char *name); 352 353 xo_ssize_t 354 xo_close_instance (const char *name); 355 356 xo_ssize_t 357 xo_close_instance_hd (xo_handle_t *xop); 358 359 xo_ssize_t 360 xo_close_instance_d (void); 361 362 xo_ssize_t 363 xo_open_marker_h (xo_handle_t *xop, const char *name); 364 365 xo_ssize_t 366 xo_open_marker (const char *name); 367 368 xo_ssize_t 369 xo_close_marker_h (xo_handle_t *xop, const char *name); 370 371 xo_ssize_t 372 xo_close_marker (const char *name); 373 374 xo_ssize_t 375 xo_attr_h (xo_handle_t *xop, const char *name, const char *fmt, ...); 376 377 xo_ssize_t 378 xo_attr_hv (xo_handle_t *xop, const char *name, const char *fmt, va_list vap); 379 380 xo_ssize_t 381 xo_attr (const char *name, const char *fmt, ...); 382 383 void 384 xo_error_hv (xo_handle_t *xop, const char *fmt, va_list vap); 385 386 void 387 xo_error_h (xo_handle_t *xop, const char *fmt, ...); 388 389 void 390 xo_error (const char *fmt, ...); 391 392 void 393 xo_errorn_hv (xo_handle_t *xop, int need_newline, const char *fmt, va_list vap); 394 395 void 396 xo_errorn_h (xo_handle_t *xop, const char *fmt, ...); 397 398 void 399 xo_errorn (const char *fmt, ...); 400 401 xo_ssize_t 402 xo_flush_h (xo_handle_t *xop); 403 404 xo_ssize_t 405 xo_flush (void); 406 407 xo_ssize_t 408 xo_finish_h (xo_handle_t *xop); 409 410 xo_ssize_t 411 xo_finish (void); 412 413 void 414 xo_finish_atexit (void); 415 416 void 417 xo_set_leading_xpath (xo_handle_t *xop, const char *path); 418 419 void 420 xo_warn_hc (xo_handle_t *xop, int code, const char *fmt, ...) PRINTFLIKE(3, 4); 421 422 void 423 xo_warn_c (int code, const char *fmt, ...) PRINTFLIKE(2, 3); 424 425 void 426 xo_warn (const char *fmt, ...) PRINTFLIKE(1, 2); 427 428 void 429 xo_warnx (const char *fmt, ...) PRINTFLIKE(1, 2); 430 431 void 432 xo_err (int eval, const char *fmt, ...) NORETURN PRINTFLIKE(2, 3); 433 434 void 435 xo_errx (int eval, const char *fmt, ...) NORETURN PRINTFLIKE(2, 3); 436 437 void 438 xo_errc (int eval, int code, const char *fmt, ...) NORETURN PRINTFLIKE(3, 4); 439 440 void 441 xo_message_hcv (xo_handle_t *xop, int code, const char *fmt, va_list vap) PRINTFLIKE(3, 0); 442 443 void 444 xo_message_hc (xo_handle_t *xop, int code, const char *fmt, ...) PRINTFLIKE(3, 4); 445 446 void 447 xo_message_c (int code, const char *fmt, ...) PRINTFLIKE(2, 3); 448 449 void 450 xo_message_e (const char *fmt, ...) PRINTFLIKE(1, 2); 451 452 void 453 xo_message (const char *fmt, ...) PRINTFLIKE(1, 2); 454 455 void 456 xo_emit_warn_hcv (xo_handle_t *xop, int as_warning, int code, 457 const char *fmt, va_list vap); 458 459 void 460 xo_emit_warn_hc (xo_handle_t *xop, int code, const char *fmt, ...); 461 462 void 463 xo_emit_warn_c (int code, const char *fmt, ...); 464 465 void 466 xo_emit_warn (const char *fmt, ...); 467 468 void 469 xo_emit_warnx (const char *fmt, ...); 470 471 void 472 xo_emit_err (int eval, const char *fmt, ...) NORETURN; 473 474 void 475 xo_emit_errx (int eval, const char *fmt, ...) NORETURN; 476 477 void 478 xo_emit_errc (int eval, int code, const char *fmt, ...) NORETURN; 479 480 PRINTFLIKE(4, 0) 481 static inline void 482 xo_emit_warn_hcvp (xo_handle_t *xop, int as_warning, int code, 483 const char *fmt, va_list vap) 484 { 485 xo_emit_warn_hcv(xop, as_warning, code, fmt, vap); 486 } 487 488 PRINTFLIKE(3, 4) 489 static inline void 490 xo_emit_warn_hcp (xo_handle_t *xop, int code, const char *fmt, ...) 491 { 492 va_list vap; 493 va_start(vap, fmt); 494 xo_emit_warn_hcv(xop, 1, code, fmt, vap); 495 va_end(vap); 496 } 497 498 PRINTFLIKE(2, 3) 499 static inline void 500 xo_emit_warn_cp (int code, const char *fmt, ...) 501 { 502 va_list vap; 503 va_start(vap, fmt); 504 xo_emit_warn_hcv(NULL, 1, code, fmt, vap); 505 va_end(vap); 506 } 507 508 PRINTFLIKE(1, 2) 509 static inline void 510 xo_emit_warn_p (const char *fmt, ...) 511 { 512 int code = errno; 513 va_list vap; 514 va_start(vap, fmt); 515 xo_emit_warn_hcv(NULL, 1, code, fmt, vap); 516 va_end(vap); 517 } 518 519 PRINTFLIKE(1, 2) 520 static inline void 521 xo_emit_warnx_p (const char *fmt, ...) 522 { 523 va_list vap; 524 va_start(vap, fmt); 525 xo_emit_warn_hcv(NULL, 1, -1, fmt, vap); 526 va_end(vap); 527 } 528 529 NORETURN PRINTFLIKE(2, 3) 530 static inline void 531 xo_emit_err_p (int eval, const char *fmt, ...) 532 { 533 int code = errno; 534 va_list vap; 535 va_start(vap, fmt); 536 xo_emit_warn_hcv(NULL, 0, code, fmt, vap); 537 va_end(vap); 538 539 exit(eval); 540 } 541 542 PRINTFLIKE(2, 3) 543 static inline void 544 xo_emit_errx_p (int eval, const char *fmt, ...) 545 { 546 va_list vap; 547 va_start(vap, fmt); 548 xo_emit_warn_hcv(NULL, 0, -1, fmt, vap); 549 va_end(vap); 550 exit(eval); 551 } 552 553 PRINTFLIKE(3, 4) 554 static inline void 555 xo_emit_errc_p (int eval, int code, const char *fmt, ...) 556 { 557 va_list vap; 558 va_start(vap, fmt); 559 xo_emit_warn_hcv(NULL, 0, code, fmt, vap); 560 va_end(vap); 561 exit(eval); 562 } 563 564 void 565 xo_emit_err_v (int eval, int code, const char *fmt, va_list vap) NORETURN PRINTFLIKE(3, 0); 566 567 void 568 xo_no_setlocale (void); 569 570 /** 571 * @brief Lift libxo-specific arguments from a set of arguments 572 * 573 * libxo-enable programs typically use command line options to enable 574 * all the nifty-cool libxo features. xo_parse_args() makes this simple 575 * by pre-processing the command line arguments given to main(), handling 576 * and removing the libxo-specific ones, meaning anything starting with 577 * "--libxo". A full description of these arguments is in the base 578 * documentation. 579 * @param[in] argc Number of arguments (ala #main()) 580 * @param[in] argc Array of argument strings (ala #main()) 581 * @return New number of arguments, or -1 for failure. 582 */ 583 int 584 xo_parse_args (int argc, char **argv); 585 586 /** 587 * This is the "magic" number returned by libxo-supporting commands 588 * when passed the equally magic "--libxo-check" option. If you 589 * return this, we can (unsafely) assume that since you know the magic 590 * handshake, you'll happily handle future --libxo options and not do 591 * something violent like reboot the box or create another hole in the 592 * ozone layer. 593 */ 594 #define XO_HAS_LIBXO 121 595 596 /** 597 * externs for libxo's version number strings 598 */ 599 extern const char xo_version[]; /** Base version triple string */ 600 extern const char xo_version_extra[]; /** Extra version magic content */ 601 602 /** 603 * @brief Dump the internal stack of a libxo handle. 604 * 605 * This diagnostic function is something I will ask you to call from 606 * your program when you write to tell me libxo has gone bat-stink 607 * crazy and has discarded your list or container or content. Output 608 * content will be what we lovingly call "developer entertainment". 609 * @param[in] xop A valid libxo handle, or NULL for the default handle 610 */ 611 void 612 xo_dump_stack (xo_handle_t *xop); 613 614 /** 615 * @brief Recode the name of the program, suitable for error output. 616 * 617 * libxo will record the given name for use while generating error 618 * messages. The contents are not copied, so the value must continue 619 * to point to a valid memory location. This allows the caller to change 620 * the value, but requires the caller to manage the memory. Typically 621 * this is called with argv[0] from main(). 622 * @param[in] name The name of the current application program 623 */ 624 void 625 xo_set_program (const char *name); 626 627 /** 628 * @brief Add a version string to the output, where possible. 629 * 630 * Adds a version number to the output, suitable for tracking 631 * changes in the content. This is only important for the "encoding" 632 * format styles (XML and JSON) and allows a user of the data to 633 * discern which version of the data model is in use. 634 * @param[in] version The version number, encoded as a string 635 */ 636 void 637 xo_set_version (const char *version); 638 639 /** 640 * #xo_set_version with a handle. 641 * @param[in] xop A valid libxo handle, or NULL for the default handle 642 * @param[in] version The version number, encoded as a string 643 */ 644 void 645 xo_set_version_h (xo_handle_t *xop, const char *version); 646 647 void 648 xo_open_log (const char *ident, int logopt, int facility); 649 650 void 651 xo_close_log (void); 652 653 int 654 xo_set_logmask (int maskpri); 655 656 void 657 xo_set_unit_test_mode (int value); 658 659 void 660 xo_syslog (int priority, const char *name, const char *message, ...); 661 662 void 663 xo_vsyslog (int priority, const char *name, const char *message, va_list args); 664 665 typedef void (*xo_syslog_open_t)(void); 666 typedef void (*xo_syslog_send_t)(const char *full_msg, 667 const char *v0_hdr, const char *text_only); 668 typedef void (*xo_syslog_close_t)(void); 669 670 void 671 xo_set_syslog_handler (xo_syslog_open_t open_func, xo_syslog_send_t send_func, 672 xo_syslog_close_t close_func); 673 674 void 675 xo_set_syslog_enterprise_id (unsigned short eid); 676 677 typedef void (*xo_simplify_field_func_t)(const char *, unsigned, int); 678 679 char * 680 xo_simplify_format (xo_handle_t *xop, const char *fmt, int with_numbers, 681 xo_simplify_field_func_t field_cb); 682 683 xo_ssize_t 684 xo_emit_field_hv (xo_handle_t *xop, const char *rolmod, const char *contents, 685 const char *fmt, const char *efmt, 686 va_list vap); 687 688 xo_ssize_t 689 xo_emit_field_h (xo_handle_t *xop, const char *rolmod, const char *contents, 690 const char *fmt, const char *efmt, ...); 691 692 xo_ssize_t 693 xo_emit_field (const char *rolmod, const char *contents, 694 const char *fmt, const char *efmt, ...); 695 696 void 697 xo_retain_clear_all (void); 698 699 void 700 xo_retain_clear (const char *fmt); 701 702 #endif /* INCLUDE_XO_H */ 703