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#if SCROLLBACK_PATCH && !VIM_BROWSE_PATCH
#define TLINEURL(y) TLINE(y)
#else
#define TLINEURL(y) term.line[y]
#endif // SCROLLBACK_PATCH
#if VIM_BROWSE_PATCH
extern int buffCols;
#endif // VIM_BROWSE_PATCH
int url_x1, url_y1, url_x2, url_y2 = -1;
int url_draw, url_click, url_maxcol;
static int
isvalidurlchar(Rune u)
{
/* () and [] can appear in urls, but excluding them here will reduce false
* positives when figuring out where a given url ends. See copyurl patch.
*/
static char urlchars[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz"
"0123456789-._~:/?#@!$&'*+,;=%";
return u < 128 && strchr(urlchars, (int)u) != NULL;
}
/* find the end of the wrapped line */
static int
findeowl(int row)
{
#if VIM_BROWSE_PATCH
int col = buffCols - 1;
#elif COLUMNS_PATCH
int col = term.maxcol - 1;
#else
int col = term.col - 1;
#endif // VIM_BROWSE_PATCH
do {
if (TLINEURL(row)[col].mode & ATTR_WRAP)
return col;
} while (TLINEURL(row)[col].u == ' ' && --col >= 0);
return -1;
}
void
clearurl(void)
{
while (url_y1 <= url_y2 && url_y1 < term.row)
term.dirty[url_y1++] = 1;
url_y2 = -1;
}
char *
detecturl(int col, int row, int draw)
{
static char url[2048];
int x1, y1, x2, y2, wrapped;
int row_start = row;
int col_start = col;
int i = sizeof(url)/2+1, j = sizeof(url)/2;
#if SCROLLBACK_PATCH && !VIM_BROWSE_PATCH
int minrow = term.scr - term.histn, maxrow = term.scr + term.row - 1;
/* Fixme: MODE_ALTSCREEN is not defined here, I had to use the magic number 1<<2 */
if ((term.mode & (1 << 2)) != 0)
minrow = 0, maxrow = term.row - 1;
#else
int minrow = 0, maxrow = term.row - 1;
#endif // scrollback_patch
url_maxcol = 0;
/* clear previously underlined url */
if (draw)
clearurl();
if (!isvalidurlchar(TLINEURL(row)[col].u))
return NULL;
/* find the first character of url */
do {
x1 = col_start, y1 = row_start;
url_maxcol = MAX(url_maxcol, x1);
url[--i] = TLINEURL(row_start)[col_start].u;
if (--col_start < 0) {
if (--row_start < minrow || (col_start = findeowl(row_start)) < 0)
break;
}
} while (i > 0 && isvalidurlchar(TLINEURL(row_start)[col_start].u));
/* early detection */
if (url[i] != 'h')
return NULL;
/* find the last character of url */
do {
x2 = col, y2 = row;
url_maxcol = MAX(url_maxcol, x2);
url[j++] = TLINEURL(row)[col].u;
wrapped = TLINEURL(row)[col].mode & ATTR_WRAP;
#if VIM_BROWSE_PATCH
if (++col >= buffCols || wrapped) {
#elif COLUMNS_PATCH
if (++col >= term.maxcol || wrapped) {
#else
if (++col >= term.col || wrapped) {
#endif // VIM_BROWSE_PATCH
col = 0;
if (++row > maxrow || !wrapped)
break;
}
} while (j < sizeof(url)-1 && isvalidurlchar(TLINEURL(row)[col].u));
url[j] = 0;
if (strncmp("https://", &url[i], 8) && strncmp("http://", &url[i], 7))
return NULL;
/* underline url (see xdrawglyphfontspecs() in x.c) */
if (draw) {
url_x1 = (y1 >= 0) ? x1 : 0;
url_x2 = (y2 < term.row) ? x2 : url_maxcol;
url_y1 = MAX(y1, 0);
url_y2 = MIN(y2, term.row-1);
url_draw = 1;
for (y1 = url_y1; y1 <= url_y2; y1++)
term.dirty[y1] = 1;
}
return &url[i];
}
void
openUrlOnClick(int col, int row, char* url_opener)
{
char *url = detecturl(col, row, 1);
if (url) {
extern char **environ;
pid_t junk;
char *argv[] = { url_opener, url, NULL };
posix_spawnp(&junk, argv[0], NULL, NULL, argv, environ);
}
}
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