st/patch/copyurl.c

185 lines
4.6 KiB
C
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2019-09-16 10:40:16 +02:00
#if COPYURL_HIGHLIGHT_SELECTED_URLS_PATCH
void
tsetcolor( int row, int start, int end, uint32_t fg, uint32_t bg )
{
int i = start;
for( ; i < end; ++i )
{
term.line[row][i].fg = fg;
term.line[row][i].bg = bg;
}
}
char *
findlastany(char *str, const char** find, size_t len)
{
char* found = NULL;
int i = 0;
for(found = str + strlen(str) - 1; found >= str; --found) {
for(i = 0; i < len; i++) {
if(strncmp(found, find[i], strlen(find[i])) == 0) {
return found;
}
}
}
return NULL;
}
/*
** Select and copy the previous url on screen (do nothing if there's no url).
**
** FIXME: doesn't handle urls that span multiple lines; will need to add support
** for multiline "getsel()" first
*/
void
copyurl(const Arg *arg) {
/* () and [] can appear in urls, but excluding them here will reduce false
* positives when figuring out where a given url ends.
*/
static char URLCHARS[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz"
"0123456789-._~:/?#@!$&'*+,;=%";
static const char* URLSTRINGS[] = {"http://", "https://"};
/* remove highlighting from previous selection if any */
if(sel.ob.x >= 0 && sel.oe.x >= 0)
tsetcolor(sel.nb.y, sel.ob.x, sel.oe.x + 1, defaultfg, defaultbg);
int i = 0,
row = 0, /* row of current URL */
col = 0, /* column of current URL start */
startrow = 0, /* row of last occurrence */
colend = 0, /* column of last occurrence */
passes = 0; /* how many rows have been scanned */
char *linestr = calloc(sizeof(char), term.col+1); /* assume ascii */
char *c = NULL,
*match = NULL;
row = (sel.ob.x >= 0 && sel.nb.y > 0) ? sel.nb.y : term.bot;
LIMIT(row, term.top, term.bot);
startrow = row;
colend = (sel.ob.x >= 0 && sel.nb.y > 0) ? sel.nb.x : term.col;
LIMIT(colend, 0, term.col);
/*
** Scan from (term.bot,term.col) to (0,0) and find
** next occurrance of a URL
*/
while (passes !=term.bot + 2) {
/* Read in each column of every row until
** we hit previous occurrence of URL
*/
for (col = 0, i = 0; col < colend; ++col,++i) {
/* assume ascii */
if (term.line[row][col].u > 127)
continue;
linestr[i] = term.line[row][col].u;
}
linestr[term.col] = '\0';
if ((match = findlastany(linestr, URLSTRINGS,
sizeof(URLSTRINGS)/sizeof(URLSTRINGS[0]))))
break;
if (--row < term.top)
row = term.bot;
colend = term.col;
passes++;
};
if (match) {
/* must happen before trim */
selclear();
sel.ob.x = strlen(linestr) - strlen(match);
/* trim the rest of the line from the url match */
for (c = match; *c != '\0'; ++c)
if (!strchr(URLCHARS, *c)) {
*c = '\0';
break;
}
/* highlight selection by inverting terminal colors */
tsetcolor(row, sel.ob.x, sel.ob.x + strlen( match ), defaultbg, defaultfg);
/* select and copy */
sel.mode = 1;
sel.type = SEL_REGULAR;
sel.oe.x = sel.ob.x + strlen(match)-1;
sel.ob.y = sel.oe.y = row;
selnormalize();
tsetdirt(sel.nb.y, sel.ne.y);
xsetsel(getsel());
xclipcopy();
}
free(linestr);
}
#else
/* select and copy the previous url on screen (do nothing if there's no url).
* known bug: doesn't handle urls that span multiple lines (wontfix), depends on multiline "getsel()"
* known bug: only finds first url on line (mightfix)
*/
void
copyurl(const Arg *arg) {
/* () and [] can appear in urls, but excluding them here will reduce false
* positives when figuring out where a given url ends.
*/
static char URLCHARS[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz"
"0123456789-._~:/?#@!$&'*+,;=%";
int i, row, startrow;
char *linestr = calloc(sizeof(char), term.col+1); /* assume ascii */
char *c, *match = NULL;
row = (sel.ob.x >= 0 && sel.nb.y > 0) ? sel.nb.y-1 : term.bot;
LIMIT(row, term.top, term.bot);
startrow = row;
/* find the start of the last url before selection */
do {
for (i = 0; i < term.col; ++i) {
if (term.line[row][i].u > 127) /* assume ascii */
continue;
linestr[i] = term.line[row][i].u;
}
linestr[term.col] = '\0';
if ((match = strstr(linestr, "http://"))
|| (match = strstr(linestr, "https://")))
break;
if (--row < term.top)
row = term.bot;
} while (row != startrow);
if (match) {
/* must happen before trim */
selclear();
sel.ob.x = strlen(linestr) - strlen(match);
/* trim the rest of the line from the url match */
for (c = match; *c != '\0'; ++c)
if (!strchr(URLCHARS, *c)) {
*c = '\0';
break;
}
/* select and copy */
sel.mode = 1;
sel.type = SEL_REGULAR;
sel.oe.x = sel.ob.x + strlen(match)-1;
sel.ob.y = sel.oe.y = row;
selnormalize();
tsetdirt(sel.nb.y, sel.ne.y);
xsetsel(getsel());
xclipcopy();
}
free(linestr);
}
#endif // COPYURL_HIGHLIGHT_SELECTED_URLS_PATCH