diff options
| -rw-r--r-- | sfeed.c | 134 |
1 files changed, 90 insertions, 44 deletions
@@ -68,8 +68,35 @@ typedef struct feedcontext { int attrcount; } FeedContext; -static void die(const char *s); -static void cleanup(void); +static void cleanup(void); +static size_t codepointtoutf8(uint32_t, uint32_t *); +static void die(const char *); +static size_t entitytostr(const char *, char *, size_t); +static int gettag(int, const char *, size_t); +static int gettimetz(const char *, char *, size_t); +static int isattr(const char *, size_t, const char *, size_t); +static int istag(const char *, size_t, const char *, size_t); +static size_t namedentitytostr(const char *, char *, size_t); +static time_t parsetime(const char *, char *, size_t); +static void string_append(String *, const char *, size_t); +static void string_buffer_init(String *, size_t); +static int string_buffer_realloc(String *, size_t); +static void string_clear(String *); +static void string_free(String *); +static void string_print(String *); +static void xml_handler_attr(XMLParser *, const char *, size_t, + const char *, size_t, const char *, size_t); +static void xml_handler_attr_start(XMLParser *, const char *, size_t, + const char *, size_t); +static void xml_handler_attr_end(struct xmlparser *, const char *, size_t, + const char *, size_t); +static void xml_handler_cdata(XMLParser *, const char *, size_t); +static void xml_handler_data(XMLParser *, const char *, size_t); +static void xml_handler_data_entity(XMLParser *, const char *, size_t); +static void xml_handler_end_element(XMLParser *, const char *, size_t, int); +static void xml_handler_start_element(XMLParser *, const char *, size_t); +static void xml_handler_start_element_parsed(XMLParser *, const char *, + size_t, int); static FeedContext ctx; static XMLParser parser; /* XML parser state */ @@ -77,31 +104,32 @@ static char *append = NULL; /* append string after each output line */ /* unique number for parsed tag (faster comparison) */ static int -gettag(int feedtype, const char *name, size_t namelen) { +gettag(int feedtype, const char *name, size_t namelen) +{ /* RSS, alphabetical order */ static FeedTag rsstag[] = { - { "author", 6, RSSTagAuthor }, + { "author", 6, RSSTagAuthor }, { "content:encoded", 15, RSSTagContentencoded }, - { "dc:creator", 10, RSSTagDccreator }, - { "dc:date", 7, RSSTagDcdate }, - { "description", 11, RSSTagDescription }, - { "guid", 4, RSSTagGuid }, - { "link", 4, RSSTagLink }, - { "pubdate", 7, RSSTagPubdate }, - { "title", 5, RSSTagTitle }, - { NULL, 0, -1 } + { "dc:creator", 10, RSSTagDccreator }, + { "dc:date", 7, RSSTagDcdate }, + { "description", 11, RSSTagDescription }, + { "guid", 4, RSSTagGuid }, + { "link", 4, RSSTagLink }, + { "pubdate", 7, RSSTagPubdate }, + { "title", 5, RSSTagTitle }, + { NULL, 0, -1 } }; /* Atom, alphabetical order */ static FeedTag atomtag[] = { - { "author", 6, AtomTagAuthor }, - { "content", 7, AtomTagContent }, - { "id", 2, AtomTagId }, - { "link", 4, AtomTagLink }, + { "author", 6, AtomTagAuthor }, + { "content", 7, AtomTagContent }, + { "id", 2, AtomTagId }, + { "link", 4, AtomTagLink }, { "published", 9, AtomTagPublished }, - { "summary", 7, AtomTagSummary }, - { "title", 5, AtomTagTitle }, - { "updated", 7, AtomTagUpdated }, - { NULL, 0, -1 } + { "summary", 7, AtomTagSummary }, + { "title", 5, AtomTagTitle }, + { "updated", 7, AtomTagUpdated }, + { NULL, 0, -1 } }; int i, n; @@ -129,7 +157,8 @@ gettag(int feedtype, const char *name, size_t namelen) { } static size_t -codepointtoutf8(uint32_t cp, uint32_t *utf) { +codepointtoutf8(uint32_t cp, uint32_t *utf) +{ if(cp >= 0x10000) { /* 4 bytes */ *utf = 0xf0808080 | ((cp & 0xfc0000) << 6) | ((cp & 0x3f000) << 4) | ((cp & 0xfc0) << 2) | (cp & 0x3f); @@ -147,7 +176,8 @@ codepointtoutf8(uint32_t cp, uint32_t *utf) { } static size_t -namedentitytostr(const char *e, char *buffer, size_t bufsiz) { +namedentitytostr(const char *e, char *buffer, size_t bufsiz) +{ char *entities[6][2] = { { "<", "<" }, { ">", ">" }, @@ -174,7 +204,8 @@ namedentitytostr(const char *e, char *buffer, size_t bufsiz) { /* convert named- or numeric entity string to buffer string * returns byte-length of string. */ static size_t -entitytostr(const char *e, char *buffer, size_t bufsiz) { +entitytostr(const char *e, char *buffer, size_t bufsiz) +{ uint32_t l = 0, cp = 0; size_t len = 0, b; int c; @@ -218,14 +249,16 @@ entitytostr(const char *e, char *buffer, size_t bufsiz) { /* clear string only; don't free, prevents unnecessary reallocation */ static void -string_clear(String *s) { +string_clear(String *s) +{ if(s->data) s->data[0] = '\0'; s->len = 0; } static void -string_buffer_init(String *s, size_t len) { +string_buffer_init(String *s, size_t len) +{ if(!(s->data = malloc(len))) die("can't allocate enough memory"); s->bufsiz = len; @@ -233,7 +266,8 @@ string_buffer_init(String *s, size_t len) { } static void -string_free(String *s) { +string_free(String *s) +{ free(s->data); s->data = NULL; s->bufsiz = 0; @@ -241,7 +275,8 @@ string_free(String *s) { } static int -string_buffer_realloc(String *s, size_t newlen) { +string_buffer_realloc(String *s, size_t newlen) +{ char *p; size_t alloclen; @@ -256,7 +291,8 @@ string_buffer_realloc(String *s, size_t newlen) { } static void -string_append(String *s, const char *data, size_t len) { +string_append(String *s, const char *data, size_t len) +{ if(!len || *data == '\0') return; /* check if allocation is necesary, don't shrink buffer @@ -270,7 +306,8 @@ string_append(String *s, const char *data, size_t len) { /* cleanup, free allocated memory, etc */ static void -cleanup(void) { +cleanup(void) +{ string_free(&ctx.item.timestamp); string_free(&ctx.item.title); string_free(&ctx.item.link); @@ -281,7 +318,8 @@ cleanup(void) { /* print error message to stderr */ static void -die(const char *s) { +die(const char *s) +{ fprintf(stderr, "sfeed: %s\n", s); exit(EXIT_FAILURE); } @@ -289,7 +327,8 @@ die(const char *s) { /* get timezone from string, return as formatted string and time offset, * for the offset it assumes GMT */ static int -gettimetz(const char *s, char *buf, size_t bufsiz) { +gettimetz(const char *s, char *buf, size_t bufsiz) +{ const char *p = s; char tzname[16] = "", *t = NULL; int tzhour = 0, tzmin = 0; @@ -330,7 +369,8 @@ gettimetz(const char *s, char *buf, size_t bufsiz) { } static time_t -parsetime(const char *s, char *buf, size_t bufsiz) { +parsetime(const char *s, char *buf, size_t bufsiz) +{ time_t t = -1; /* can't parse */ char tz[64] = ""; struct tm tm; @@ -364,7 +404,8 @@ parsetime(const char *s, char *buf, size_t bufsiz) { /* print text, escape tabs, newline and carriage return etc */ static void -string_print(String *s) { +string_print(String *s) +{ const char *p; /* skip leading whitespace */ @@ -383,7 +424,8 @@ string_print(String *s) { } static int -istag(const char *name, size_t len, const char *name2, size_t len2) { +istag(const char *name, size_t len, const char *name2, size_t len2) +{ return (len == len2 && !strcasecmp(name, name2)); } @@ -395,7 +437,8 @@ isattr(const char *name, size_t len, const char *name2, size_t len2) { /* NOTE: this handler can be called multiple times if the data in this * block is bigger than the buffer */ static void -xml_handler_data(XMLParser *p, const char *s, size_t len) { +xml_handler_data(XMLParser *p, const char *s, size_t len) +{ if(ctx.field) { /* add only data from <name> inside <author> tag * or any other non-<author> tag */ @@ -405,7 +448,8 @@ xml_handler_data(XMLParser *p, const char *s, size_t len) { } static void -xml_handler_cdata(XMLParser *p, const char *s, size_t len) { +xml_handler_cdata(XMLParser *p, const char *s, size_t len) +{ (void)p; if(ctx.field) @@ -413,7 +457,7 @@ xml_handler_cdata(XMLParser *p, const char *s, size_t len) { } static void -xml_handler_attr_start(struct xmlparser *p, const char *tag, size_t taglen, +xml_handler_attr_start(XMLParser *p, const char *tag, size_t taglen, const char *name, size_t namelen) { (void)tag; @@ -482,7 +526,7 @@ xml_handler_attr(XMLParser *p, const char *tag, size_t taglen, { ctx.item.contenttype = ContentTypeHTML; ctx.iscontent = 1; -/* p->xmldataentity = NULL;*/ +/* p->xmldataentity = NULL;*/ /* TODO: don't convert entities? test this */ p->xmlattrstart = xml_handler_attr_start; p->xmlattrend = xml_handler_attr_end; p->xmltagstartparsed = xml_handler_start_element_parsed; @@ -497,7 +541,8 @@ xml_handler_attr(XMLParser *p, const char *tag, size_t taglen, } static void -xml_handler_start_element(XMLParser *p, const char *name, size_t namelen) { +xml_handler_start_element(XMLParser *p, const char *name, size_t namelen) +{ if(ctx.iscontenttag) { /* starts with div, handle as XML, don't convert entities (set handle to NULL) */ if(ctx.item.feedtype == FeedTypeAtom && @@ -585,7 +630,8 @@ xml_handler_start_element(XMLParser *p, const char *name, size_t namelen) { } static void -xml_handler_data_entity(XMLParser *p, const char *data, size_t datalen) { +xml_handler_data_entity(XMLParser *p, const char *data, size_t datalen) +{ char buffer[16]; size_t len; @@ -597,7 +643,8 @@ xml_handler_data_entity(XMLParser *p, const char *data, size_t datalen) { } static void -xml_handler_end_element(XMLParser *p, const char *name, size_t namelen, int isshort) { +xml_handler_end_element(XMLParser *p, const char *name, size_t namelen, int isshort) +{ char timebuf[64]; int tagid; @@ -691,14 +738,13 @@ xml_handler_end_element(XMLParser *p, const char *name, size_t namelen, int issh } int -main(int argc, char **argv) { +main(int argc, char *argv[]) +{ atexit(cleanup); if(argc > 1) append = argv[1]; - memset(&ctx, 0, sizeof(ctx)); - /* init strings and initial memory pool size */ string_buffer_init(&ctx.item.timestamp, 64); string_buffer_init(&ctx.item.title, 256); |