/* * "$Id: encode.c 7696 2008-06-26 00:54:42Z mike $" * * Option encoding routines for CUPS. * * Copyright 2007-2012 by Apple Inc. * Copyright 1997-2007 by Easy Software Products. * * These coded instructions, statements, and computer programs are the * property of Apple Inc. and are protected by Federal copyright * law. Distribution and use rights are outlined in the file "LICENSE.txt" * which should have been included with this file. If this file is * file is missing or damaged, see the license at "http://www.cups.org/". * * This file is subject to the Apple OS-Developed Software exception. * * Contents: * * cupsEncodeOptions() - Encode printer options into IPP attributes. * cupsEncodeOptions2() - Encode printer options into IPP attributes for * a group. * _ippFindOption() - Find the attribute information for an option. * compare_ipp_options() - Compare two IPP options. */ /* * Include necessary headers... */ #include "cups-private.h" /* * Local list of option names and the value tags they should use... * * **** THIS LIST MUST BE SORTED **** */ static const _ipp_option_t ipp_options[] = { { 1, "auth-info", IPP_TAG_TEXT, IPP_TAG_JOB }, { 1, "auth-info-required", IPP_TAG_KEYWORD, IPP_TAG_PRINTER }, { 0, "blackplot", IPP_TAG_BOOLEAN, IPP_TAG_JOB }, { 0, "blackplot-default", IPP_TAG_BOOLEAN, IPP_TAG_PRINTER }, { 0, "brightness", IPP_TAG_INTEGER, IPP_TAG_JOB }, { 0, "brightness-default", IPP_TAG_INTEGER, IPP_TAG_PRINTER }, { 0, "columns", IPP_TAG_INTEGER, IPP_TAG_JOB }, { 0, "columns-default", IPP_TAG_INTEGER, IPP_TAG_PRINTER }, { 0, "compression", IPP_TAG_KEYWORD, IPP_TAG_OPERATION }, { 0, "copies", IPP_TAG_INTEGER, IPP_TAG_JOB, IPP_TAG_DOCUMENT }, { 0, "copies-default", IPP_TAG_INTEGER, IPP_TAG_PRINTER }, { 0, "device-uri", IPP_TAG_URI, IPP_TAG_PRINTER }, { 1, "document-copies", IPP_TAG_RANGE, IPP_TAG_JOB, IPP_TAG_DOCUMENT }, { 0, "document-format", IPP_TAG_MIMETYPE, IPP_TAG_OPERATION }, { 0, "document-format-default", IPP_TAG_MIMETYPE, IPP_TAG_PRINTER }, { 1, "document-numbers", IPP_TAG_RANGE, IPP_TAG_JOB, IPP_TAG_DOCUMENT }, { 1, "exclude-schemes", IPP_TAG_NAME, IPP_TAG_OPERATION }, { 1, "finishings", IPP_TAG_ENUM, IPP_TAG_JOB, IPP_TAG_DOCUMENT }, { 1, "finishings-default", IPP_TAG_ENUM, IPP_TAG_PRINTER }, { 0, "fit-to-page", IPP_TAG_BOOLEAN, IPP_TAG_JOB, IPP_TAG_DOCUMENT }, { 0, "fit-to-page-default", IPP_TAG_BOOLEAN, IPP_TAG_PRINTER }, { 0, "fitplot", IPP_TAG_BOOLEAN, IPP_TAG_JOB }, { 0, "fitplot-default", IPP_TAG_BOOLEAN, IPP_TAG_PRINTER }, { 0, "gamma", IPP_TAG_INTEGER, IPP_TAG_JOB }, { 0, "gamma-default", IPP_TAG_INTEGER, IPP_TAG_PRINTER }, { 0, "hue", IPP_TAG_INTEGER, IPP_TAG_JOB }, { 0, "hue-default", IPP_TAG_INTEGER, IPP_TAG_PRINTER }, { 1, "include-schemes", IPP_TAG_NAME, IPP_TAG_OPERATION }, { 0, "job-id", IPP_TAG_INTEGER, IPP_TAG_ZERO }, /* never send as option */ { 0, "job-impressions", IPP_TAG_INTEGER, IPP_TAG_ZERO }, /* never send as option */ { 0, "job-impressions-completed", IPP_TAG_INTEGER, IPP_TAG_ZERO }, /* never send as option */ { 0, "job-k-limit", IPP_TAG_INTEGER, IPP_TAG_PRINTER }, { 0, "job-k-octets", IPP_TAG_INTEGER, IPP_TAG_ZERO }, /* never send as option */ { 0, "job-k-octets-completed",IPP_TAG_INTEGER, IPP_TAG_ZERO }, /* never send as option */ { 0, "job-media-sheets", IPP_TAG_INTEGER, IPP_TAG_ZERO }, /* never send as option */ { 0, "job-media-sheets-completed", IPP_TAG_INTEGER, IPP_TAG_ZERO }, /* never send as option */ { 0, "job-page-limit", IPP_TAG_INTEGER, IPP_TAG_PRINTER }, { 0, "job-priority", IPP_TAG_INTEGER, IPP_TAG_JOB }, { 0, "job-quota-period", IPP_TAG_INTEGER, IPP_TAG_PRINTER }, { 1, "job-sheets", IPP_TAG_NAME, IPP_TAG_JOB }, { 1, "job-sheets-default", IPP_TAG_NAME, IPP_TAG_PRINTER }, { 0, "job-state", IPP_TAG_ENUM, IPP_TAG_ZERO }, /* never send as option */ { 0, "job-state-message", IPP_TAG_TEXT, IPP_TAG_ZERO }, /* never send as option */ { 0, "job-state-reasons", IPP_TAG_KEYWORD, IPP_TAG_ZERO }, /* never send as option */ { 0, "job-uuid", IPP_TAG_URI, IPP_TAG_JOB }, { 0, "landscape", IPP_TAG_BOOLEAN, IPP_TAG_JOB }, { 1, "marker-change-time", IPP_TAG_INTEGER, IPP_TAG_PRINTER }, { 1, "marker-colors", IPP_TAG_NAME, IPP_TAG_PRINTER }, { 1, "marker-high-levels", IPP_TAG_INTEGER, IPP_TAG_PRINTER }, { 1, "marker-levels", IPP_TAG_INTEGER, IPP_TAG_PRINTER }, { 1, "marker-low-levels", IPP_TAG_INTEGER, IPP_TAG_PRINTER }, { 0, "marker-message", IPP_TAG_TEXT, IPP_TAG_PRINTER }, { 1, "marker-names", IPP_TAG_NAME, IPP_TAG_PRINTER }, { 1, "marker-types", IPP_TAG_KEYWORD, IPP_TAG_PRINTER }, { 1, "media", IPP_TAG_KEYWORD, IPP_TAG_JOB, IPP_TAG_DOCUMENT }, { 0, "media-col", IPP_TAG_BEGIN_COLLECTION, IPP_TAG_JOB, IPP_TAG_DOCUMENT }, { 0, "media-col-default", IPP_TAG_BEGIN_COLLECTION, IPP_TAG_PRINTER }, { 0, "media-color", IPP_TAG_KEYWORD, IPP_TAG_JOB, IPP_TAG_DOCUMENT }, { 1, "media-default", IPP_TAG_KEYWORD, IPP_TAG_PRINTER }, { 0, "media-key", IPP_TAG_KEYWORD, IPP_TAG_JOB, IPP_TAG_DOCUMENT }, { 0, "media-size", IPP_TAG_BEGIN_COLLECTION, IPP_TAG_JOB, IPP_TAG_DOCUMENT }, { 0, "media-type", IPP_TAG_KEYWORD, IPP_TAG_JOB, IPP_TAG_DOCUMENT }, { 0, "mirror", IPP_TAG_BOOLEAN, IPP_TAG_JOB }, { 0, "mirror-default", IPP_TAG_BOOLEAN, IPP_TAG_PRINTER }, { 0, "natural-scaling", IPP_TAG_INTEGER, IPP_TAG_JOB }, { 0, "natural-scaling-default", IPP_TAG_INTEGER, IPP_TAG_PRINTER }, { 0, "notify-charset", IPP_TAG_CHARSET, IPP_TAG_SUBSCRIPTION }, { 1, "notify-events", IPP_TAG_KEYWORD, IPP_TAG_SUBSCRIPTION }, { 1, "notify-events-default", IPP_TAG_KEYWORD, IPP_TAG_PRINTER }, { 0, "notify-lease-duration", IPP_TAG_INTEGER, IPP_TAG_SUBSCRIPTION }, { 0, "notify-lease-duration-default", IPP_TAG_INTEGER, IPP_TAG_PRINTER }, { 0, "notify-natural-language", IPP_TAG_LANGUAGE, IPP_TAG_SUBSCRIPTION }, { 0, "notify-pull-method", IPP_TAG_KEYWORD, IPP_TAG_SUBSCRIPTION }, { 0, "notify-recipient-uri", IPP_TAG_URI, IPP_TAG_SUBSCRIPTION }, { 0, "notify-time-interval", IPP_TAG_INTEGER, IPP_TAG_SUBSCRIPTION }, { 0, "notify-user-data", IPP_TAG_STRING, IPP_TAG_SUBSCRIPTION }, { 0, "number-up", IPP_TAG_INTEGER, IPP_TAG_JOB, IPP_TAG_DOCUMENT }, { 0, "number-up-default", IPP_TAG_INTEGER, IPP_TAG_PRINTER }, { 0, "orientation-requested", IPP_TAG_ENUM, IPP_TAG_JOB, IPP_TAG_DOCUMENT }, { 0, "orientation-requested-default", IPP_TAG_ENUM, IPP_TAG_PRINTER }, { 1, "overrides", IPP_TAG_BEGIN_COLLECTION, IPP_TAG_JOB, IPP_TAG_DOCUMENT }, { 0, "page-bottom", IPP_TAG_INTEGER, IPP_TAG_JOB }, { 0, "page-bottom-default", IPP_TAG_INTEGER, IPP_TAG_PRINTER }, { 0, "page-left", IPP_TAG_INTEGER, IPP_TAG_JOB }, { 0, "page-left-default", IPP_TAG_INTEGER, IPP_TAG_PRINTER }, { 1, "page-ranges", IPP_TAG_RANGE, IPP_TAG_JOB, IPP_TAG_DOCUMENT }, { 1, "page-ranges-default", IPP_TAG_RANGE, IPP_TAG_PRINTER }, { 0, "page-right", IPP_TAG_INTEGER, IPP_TAG_JOB }, { 0, "page-right-default", IPP_TAG_INTEGER, IPP_TAG_PRINTER }, { 0, "page-top", IPP_TAG_INTEGER, IPP_TAG_JOB }, { 0, "page-top-default", IPP_TAG_INTEGER, IPP_TAG_PRINTER }, { 1, "pages", IPP_TAG_RANGE, IPP_TAG_JOB, IPP_TAG_DOCUMENT }, { 0, "penwidth", IPP_TAG_INTEGER, IPP_TAG_JOB }, { 0, "penwidth-default", IPP_TAG_INTEGER, IPP_TAG_PRINTER }, { 0, "port-monitor", IPP_TAG_NAME, IPP_TAG_PRINTER }, { 0, "ppd-name", IPP_TAG_NAME, IPP_TAG_PRINTER }, { 0, "ppi", IPP_TAG_INTEGER, IPP_TAG_JOB }, { 0, "ppi-default", IPP_TAG_INTEGER, IPP_TAG_PRINTER }, { 0, "prettyprint", IPP_TAG_BOOLEAN, IPP_TAG_JOB }, { 0, "prettyprint-default", IPP_TAG_BOOLEAN, IPP_TAG_PRINTER }, { 0, "print-quality", IPP_TAG_ENUM, IPP_TAG_JOB, IPP_TAG_DOCUMENT }, { 0, "print-quality-default", IPP_TAG_ENUM, IPP_TAG_PRINTER }, { 1, "printer-commands", IPP_TAG_KEYWORD, IPP_TAG_PRINTER }, { 0, "printer-error-policy", IPP_TAG_NAME, IPP_TAG_PRINTER }, { 0, "printer-info", IPP_TAG_TEXT, IPP_TAG_PRINTER }, { 0, "printer-is-accepting-jobs", IPP_TAG_BOOLEAN, IPP_TAG_PRINTER }, { 0, "printer-is-shared", IPP_TAG_BOOLEAN, IPP_TAG_PRINTER }, { 0, "printer-location", IPP_TAG_TEXT, IPP_TAG_PRINTER }, { 0, "printer-make-and-model", IPP_TAG_TEXT, IPP_TAG_PRINTER }, { 0, "printer-more-info", IPP_TAG_URI, IPP_TAG_PRINTER }, { 0, "printer-op-policy", IPP_TAG_NAME, IPP_TAG_PRINTER }, { 0, "printer-resolution", IPP_TAG_RESOLUTION, IPP_TAG_JOB, IPP_TAG_DOCUMENT }, { 0, "printer-state", IPP_TAG_ENUM, IPP_TAG_PRINTER }, { 0, "printer-state-change-time", IPP_TAG_INTEGER, IPP_TAG_PRINTER }, { 1, "printer-state-reasons", IPP_TAG_KEYWORD, IPP_TAG_PRINTER }, { 0, "printer-type", IPP_TAG_ENUM, IPP_TAG_PRINTER }, { 0, "printer-uri", IPP_TAG_URI, IPP_TAG_OPERATION }, { 1, "printer-uri-supported", IPP_TAG_URI, IPP_TAG_PRINTER }, { 0, "queued-job-count", IPP_TAG_INTEGER, IPP_TAG_PRINTER }, { 0, "raw", IPP_TAG_MIMETYPE, IPP_TAG_OPERATION }, { 1, "requested-attributes", IPP_TAG_NAME, IPP_TAG_OPERATION }, { 1, "requesting-user-name-allowed", IPP_TAG_NAME, IPP_TAG_PRINTER }, { 1, "requesting-user-name-denied", IPP_TAG_NAME, IPP_TAG_PRINTER }, { 0, "resolution", IPP_TAG_RESOLUTION, IPP_TAG_JOB }, { 0, "resolution-default", IPP_TAG_RESOLUTION, IPP_TAG_PRINTER }, { 0, "saturation", IPP_TAG_INTEGER, IPP_TAG_JOB }, { 0, "saturation-default", IPP_TAG_INTEGER, IPP_TAG_PRINTER }, { 0, "scaling", IPP_TAG_INTEGER, IPP_TAG_JOB }, { 0, "scaling-default", IPP_TAG_INTEGER, IPP_TAG_PRINTER }, { 0, "sides", IPP_TAG_KEYWORD, IPP_TAG_JOB, IPP_TAG_DOCUMENT }, { 0, "sides-default", IPP_TAG_KEYWORD, IPP_TAG_PRINTER }, { 0, "time-at-completed", IPP_TAG_INTEGER, IPP_TAG_ZERO }, /* never send as option */ { 0, "time-at-creation", IPP_TAG_INTEGER, IPP_TAG_ZERO }, /* never send as option */ { 0, "time-at-processing", IPP_TAG_INTEGER, IPP_TAG_ZERO }, /* never send as option */ { 0, "wrap", IPP_TAG_BOOLEAN, IPP_TAG_JOB }, { 0, "wrap-default", IPP_TAG_BOOLEAN, IPP_TAG_PRINTER }, { 0, "x-dimension", IPP_TAG_INTEGER, IPP_TAG_JOB, IPP_TAG_DOCUMENT }, { 0, "y-dimension", IPP_TAG_INTEGER, IPP_TAG_JOB, IPP_TAG_DOCUMENT } }; /* * Local functions... */ static int compare_ipp_options(_ipp_option_t *a, _ipp_option_t *b); /* * 'cupsEncodeOptions()' - Encode printer options into IPP attributes. * * This function adds operation, job, and then subscription attributes, * in that order. Use the cupsEncodeOptions2() function to add attributes * for a single group. */ void cupsEncodeOptions(ipp_t *ipp, /* I - Request to add to */ int num_options, /* I - Number of options */ cups_option_t *options) /* I - Options */ { DEBUG_printf(("cupsEncodeOptions(%p, %d, %p)", ipp, num_options, options)); /* * Add the options in the proper groups & order... */ cupsEncodeOptions2(ipp, num_options, options, IPP_TAG_OPERATION); cupsEncodeOptions2(ipp, num_options, options, IPP_TAG_JOB); cupsEncodeOptions2(ipp, num_options, options, IPP_TAG_SUBSCRIPTION); } /* * 'cupsEncodeOptions2()' - Encode printer options into IPP attributes for a group. * * This function only adds attributes for a single group. Call this * function multiple times for each group, or use cupsEncodeOptions() * to add the standard groups. * * @since CUPS 1.2/OS X 10.5@ */ void cupsEncodeOptions2( ipp_t *ipp, /* I - Request to add to */ int num_options, /* I - Number of options */ cups_option_t *options, /* I - Options */ ipp_tag_t group_tag) /* I - Group to encode */ { int i, j; /* Looping vars */ int count; /* Number of values */ char *s, /* Pointer into option value */ *val, /* Pointer to option value */ *copy, /* Copy of option value */ *sep, /* Option separator */ quote; /* Quote character */ ipp_attribute_t *attr; /* IPP attribute */ ipp_tag_t value_tag; /* IPP value tag */ cups_option_t *option; /* Current option */ ipp_t *collection; /* Collection value */ int num_cols; /* Number of collection values */ cups_option_t *cols; /* Collection values */ DEBUG_printf(("cupsEncodeOptions2(ipp=%p, num_options=%d, options=%p, " "group_tag=%x)", ipp, num_options, options, group_tag)); /* * Range check input... */ if (!ipp || num_options < 1 || !options) return; /* * Do special handling for the document-format/raw options... */ if (group_tag == IPP_TAG_OPERATION) { /* * Handle the document format stuff first... */ if ((val = (char *)cupsGetOption("document-format", num_options, options)) != NULL) ippAddString(ipp, IPP_TAG_OPERATION, IPP_TAG_MIMETYPE, "document-format", NULL, val); else if (cupsGetOption("raw", num_options, options)) ippAddString(ipp, IPP_TAG_OPERATION, IPP_TAG_MIMETYPE, "document-format", NULL, "application/vnd.cups-raw"); else ippAddString(ipp, IPP_TAG_OPERATION, IPP_TAG_MIMETYPE, "document-format", NULL, "application/octet-stream"); } /* * Then loop through the options... */ for (i = num_options, option = options; i > 0; i --, option ++) { _ipp_option_t *match; /* Matching attribute */ /* * Skip document format options that are handled above... */ if (!_cups_strcasecmp(option->name, "raw") || !_cups_strcasecmp(option->name, "document-format") || !option->name[0]) continue; /* * Figure out the proper value and group tags for this option... */ if ((match = _ippFindOption(option->name)) != NULL) { if (match->group_tag != group_tag && match->alt_group_tag != group_tag) continue; value_tag = match->value_tag; } else { int namelen; /* Length of name */ namelen = (int)strlen(option->name); if (namelen < 10 || (strcmp(option->name + namelen - 8, "-default") && strcmp(option->name + namelen - 10, "-supported"))) { if (group_tag != IPP_TAG_JOB && group_tag != IPP_TAG_DOCUMENT) continue; } else if (group_tag != IPP_TAG_PRINTER) continue; if (!_cups_strcasecmp(option->value, "true") || !_cups_strcasecmp(option->value, "false")) value_tag = IPP_TAG_BOOLEAN; else value_tag = IPP_TAG_NAME; } /* * Count the number of values... */ if (match && match->multivalue) { for (count = 1, sep = option->value, quote = 0; *sep; sep ++) { if (*sep == quote) quote = 0; else if (!quote && (*sep == '\'' || *sep == '\"')) { /* * Skip quoted option value... */ quote = *sep++; } else if (*sep == ',' && !quote) count ++; else if (*sep == '\\' && sep[1]) sep ++; } } else count = 1; DEBUG_printf(("2cupsEncodeOptions2: option=\"%s\", count=%d", option->name, count)); /* * Allocate memory for the attribute values... */ if ((attr = ippAddStrings(ipp, group_tag, value_tag, option->name, count, NULL, NULL)) == NULL) { /* * Ran out of memory! */ DEBUG_puts("1cupsEncodeOptions2: Ran out of memory for attributes!"); return; } if (count > 1) { /* * Make a copy of the value we can fiddle with... */ if ((copy = strdup(option->value)) == NULL) { /* * Ran out of memory! */ DEBUG_puts("1cupsEncodeOptions2: Ran out of memory for value copy!"); ippDeleteAttribute(ipp, attr); return; } val = copy; } else { /* * Since we have a single value, use the value directly... */ val = option->value; copy = NULL; } /* * Scan the value string for values... */ for (j = 0, sep = val; j < count; val = sep, j ++) { /* * Find the end of this value and mark it if needed... */ if (count > 1) { for (quote = 0; *sep; sep ++) { if (*sep == quote) { /* * Finish quoted value... */ quote = 0; } else if (!quote && (*sep == '\'' || *sep == '\"')) { /* * Handle quoted option value... */ quote = *sep; } else if (*sep == ',' && count > 1) break; else if (*sep == '\\' && sep[1]) { /* * Skip quoted character... */ sep ++; } } if (*sep == ',') *sep++ = '\0'; } /* * Copy the option value(s) over as needed by the type... */ switch (attr->value_tag) { case IPP_TAG_INTEGER : case IPP_TAG_ENUM : /* * Integer/enumeration value... */ attr->values[j].integer = strtol(val, &s, 10); DEBUG_printf(("2cupsEncodeOptions2: Added integer option value " "%d...", attr->values[j].integer)); break; case IPP_TAG_BOOLEAN : if (!_cups_strcasecmp(val, "true") || !_cups_strcasecmp(val, "on") || !_cups_strcasecmp(val, "yes")) { /* * Boolean value - true... */ attr->values[j].boolean = 1; DEBUG_puts("2cupsEncodeOptions2: Added boolean true value..."); } else { /* * Boolean value - false... */ attr->values[j].boolean = 0; DEBUG_puts("2cupsEncodeOptions2: Added boolean false value..."); } break; case IPP_TAG_RANGE : /* * Range... */ if (*val == '-') { attr->values[j].range.lower = 1; s = val; } else attr->values[j].range.lower = strtol(val, &s, 10); if (*s == '-') { if (s[1]) attr->values[j].range.upper = strtol(s + 1, NULL, 10); else attr->values[j].range.upper = 2147483647; } else attr->values[j].range.upper = attr->values[j].range.lower; DEBUG_printf(("2cupsEncodeOptions2: Added range option value " "%d-%d...", attr->values[j].range.lower, attr->values[j].range.upper)); break; case IPP_TAG_RESOLUTION : /* * Resolution... */ attr->values[j].resolution.xres = strtol(val, &s, 10); if (*s == 'x') attr->values[j].resolution.yres = strtol(s + 1, &s, 10); else attr->values[j].resolution.yres = attr->values[j].resolution.xres; if (!_cups_strcasecmp(s, "dpc") || !_cups_strcasecmp(s, "dpcm")) attr->values[j].resolution.units = IPP_RES_PER_CM; else attr->values[j].resolution.units = IPP_RES_PER_INCH; DEBUG_printf(("2cupsEncodeOptions2: Added resolution option value " "%s...", val)); break; case IPP_TAG_STRING : /* * octet-string */ attr->values[j].unknown.length = (int)strlen(val); attr->values[j].unknown.data = strdup(val); DEBUG_printf(("2cupsEncodeOptions2: Added octet-string value " "\"%s\"...", (char *)attr->values[j].unknown.data)); break; case IPP_TAG_BEGIN_COLLECTION : /* * Collection value */ num_cols = cupsParseOptions(val, 0, &cols); if ((collection = ippNew()) == NULL) { cupsFreeOptions(num_cols, cols); if (copy) free(copy); ippDeleteAttribute(ipp, attr); return; } attr->values[j].collection = collection; cupsEncodeOptions2(collection, num_cols, cols, IPP_TAG_JOB); cupsFreeOptions(num_cols, cols); break; default : if ((attr->values[j].string.text = _cupsStrAlloc(val)) == NULL) { /* * Ran out of memory! */ DEBUG_puts("1cupsEncodeOptions2: Ran out of memory for string!"); if (copy) free(copy); ippDeleteAttribute(ipp, attr); return; } DEBUG_printf(("2cupsEncodeOptions2: Added string value \"%s\"...", val)); break; } } if (copy) free(copy); } } /* * '_ippFindOption()' - Find the attribute information for an option. */ _ipp_option_t * /* O - Attribute information */ _ippFindOption(const char *name) /* I - Option/attribute name */ { _ipp_option_t key; /* Search key */ /* * Lookup the proper value and group tags for this option... */ key.name = name; return ((_ipp_option_t *)bsearch(&key, ipp_options, sizeof(ipp_options) / sizeof(ipp_options[0]), sizeof(ipp_options[0]), (int (*)(const void *, const void *)) compare_ipp_options)); } /* * 'compare_ipp_options()' - Compare two IPP options. */ static int /* O - Result of comparison */ compare_ipp_options(_ipp_option_t *a, /* I - First option */ _ipp_option_t *b) /* I - Second option */ { return (strcmp(a->name, b->name)); } /* * End of "$Id: encode.c 7696 2008-06-26 00:54:42Z mike $". */