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#include <ctype.h>
#include <string.h>
#include "parse.h"
#include "str.h"
#include "err.h"
int isurlch(char c) {
return isalpha(c) || isdigit(c) || c == '-' || c == '.' || c == '_' || c == '~' || c == '!' || c == '$' || c == '\'' || c == '(' || c == ')' || c == '*' || c == '+' || c == ',' || c == ';' || c == '=' || c == '%' || c == '@' || c == ':' || c == '/';
}
void parse_plain_url(struct doc *d, strv_t ln, size_t i) {
size_t start = i - 1;
while (start > 0 && isalpha(ln.s[start])) start--;
if (!isalpha(ln.s[start])) start++;
size_t end = i + 3;
while (end < ln.n && isurlch(ln.s[end])) end++;
if (end == i + 3) return;
strv_t url = { &ln.s[start], end - start };
doc_line_at(d, d->latest)->link = doc_add_link(d, url);
}
int parse_plain(struct doc *d, const str_t *b) {
doc_init(d);
strv_t ln, buf = strv(b);
while (strv_split(&buf, '\n', &ln)) {
if (ln.n > 0 && ln.s[ln.n - 1] == '\r') ln.n--;
for (size_t j = 1; j + 2 < ln.n; j++) {
if (ln.s[j] == ':' && ln.s[j + 1] == '/' && ln.s[j + 2] == '/') {
parse_plain_url(d, ln, j);
}
}
doc_add_line(d, ln);
}
return 0;
}
int parse_gophermap_line(struct doc *d, strv_t ln) {
return 0;
}
int parse_gophermap(struct doc *d, const str_t *b) {
str_t url;
struct {
char item_type;
strv_t dstr;
strv_t sel;
strv_t host;
strv_t port;
} bits;
doc_init(d);
str_init(&url, 64);
strv_t ln, buf = { b->buf, b->sz };
while (strv_split(&buf, '\n', &ln)) {
if (ln.n > 0 && ln.s[ln.n - 1] == '\r') ln.n--;
if (ln.n == 1 && ln.s[0] == '.') break;
bits.item_type = strv_next(&ln);
strv_split(&ln, '\t', &bits.dstr);
strv_split(&ln, '\t', &bits.sel);
strv_split(&ln, '\t', &bits.host);
strv_split(&ln, '\t', &bits.port);
switch (bits.item_type) {
default:
str_fmt(&url, "%s:%s/%c%s", bits.host, bits.port, bits.item_type, bits.sel);
doc_set_link(d, doc_add_link(d, strv(url)));
case 'i':
doc_add_text(d, bits.dstr);
doc_new_line(d);
break;
}
}
str_free(&url);
return 0;
}
int parse_doc(enum doc_type type, struct doc *d, const str_t *b) {
switch (type) {
case DOC_PLAIN:
return parse_plain(d, b);
case DOC_GOPHERMAP:
return parse_gophermap(d, b);
default:
perr("unsupported doctype");
return -1;
}
}
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