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Diffstat (limited to 'sfeed.c')
-rw-r--r--sfeed.c134
1 files changed, 90 insertions, 44 deletions
diff --git a/sfeed.c b/sfeed.c
index 416dbfa..157ece9 100644
--- a/sfeed.c
+++ b/sfeed.c
@@ -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] = {
{ "&lt;", "<" },
{ "&gt;", ">" },
@@ -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);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-27 22:22:40 +0000