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#include "owl.h"
#include <stdlib.h>
#include <string.h>
/* initialize an fmtext with no data */
void owl_fmtext_init_null(owl_fmtext *f)
{
f->buff = g_string_new("");
}
/* Clear the data from an fmtext, but don't deallocate memory. This
fmtext can then be appended to again. */
void owl_fmtext_clear(owl_fmtext *f)
{
g_string_truncate(f->buff, 0);
}
int owl_fmtext_is_format_char(gunichar c)
{
if ((c & ~OWL_FMTEXT_UC_ATTR_MASK) == OWL_FMTEXT_UC_ATTR) return 1;
if ((c & ~(OWL_FMTEXT_UC_ALLCOLOR_MASK)) == OWL_FMTEXT_UC_COLOR_BASE) return 1;
return 0;
}
/* append text to the end of 'f' with attribute 'attr' and color
* 'color'
*/
void owl_fmtext_append_attr(owl_fmtext *f, const char *text, char attr, short fgcolor, short bgcolor)
{
int a = 0, fg = 0, bg = 0;
if (attr != OWL_FMTEXT_ATTR_NONE) a=1;
if (fgcolor != OWL_COLOR_DEFAULT) fg=1;
if (bgcolor != OWL_COLOR_DEFAULT) bg=1;
/* Set attributes */
if (a)
g_string_append_unichar(f->buff, OWL_FMTEXT_UC_ATTR | attr);
if (fg)
g_string_append_unichar(f->buff, OWL_FMTEXT_UC_FGCOLOR | fgcolor);
if (bg)
g_string_append_unichar(f->buff, OWL_FMTEXT_UC_BGCOLOR | bgcolor);
g_string_append(f->buff, text);
/* Reset attributes */
if (bg) g_string_append_unichar(f->buff, OWL_FMTEXT_UC_BGDEFAULT);
if (fg) g_string_append_unichar(f->buff, OWL_FMTEXT_UC_FGDEFAULT);
if (a) g_string_append_unichar(f->buff, OWL_FMTEXT_UC_ATTR | OWL_FMTEXT_UC_ATTR);
}
/* Append normal, uncolored text 'text' to 'f' */
void owl_fmtext_append_normal(owl_fmtext *f, const char *text)
{
owl_fmtext_append_attr(f, text, OWL_FMTEXT_ATTR_NONE, OWL_COLOR_DEFAULT, OWL_COLOR_DEFAULT);
}
/* Append normal, uncolored text specified by format string to 'f' */
void G_GNUC_PRINTF(2, 3) owl_fmtext_appendf_normal(owl_fmtext *f, const char *fmt, ...)
{
va_list ap;
char *buff;
va_start(ap, fmt);
buff = g_strdup_vprintf(fmt, ap);
va_end(ap);
if (!buff)
return;
owl_fmtext_append_attr(f, buff, OWL_FMTEXT_ATTR_NONE, OWL_COLOR_DEFAULT, OWL_COLOR_DEFAULT);
g_free(buff);
}
/* Append normal text 'text' to 'f' with color 'color' */
void owl_fmtext_append_normal_color(owl_fmtext *f, const char *text, int fgcolor, int bgcolor)
{
owl_fmtext_append_attr(f, text, OWL_FMTEXT_ATTR_NONE, fgcolor, bgcolor);
}
/* Append bold text 'text' to 'f' */
void owl_fmtext_append_bold(owl_fmtext *f, const char *text)
{
owl_fmtext_append_attr(f, text, OWL_FMTEXT_ATTR_BOLD, OWL_COLOR_DEFAULT, OWL_COLOR_DEFAULT);
}
/* Append reverse video text 'text' to 'f' */
void owl_fmtext_append_reverse(owl_fmtext *f, const char *text)
{
owl_fmtext_append_attr(f, text, OWL_FMTEXT_ATTR_REVERSE, OWL_COLOR_DEFAULT, OWL_COLOR_DEFAULT);
}
/* Append reversed and bold, uncolored text 'text' to 'f' */
void owl_fmtext_append_reversebold(owl_fmtext *f, const char *text)
{
owl_fmtext_append_attr(f, text, OWL_FMTEXT_ATTR_REVERSE | OWL_FMTEXT_ATTR_BOLD, OWL_COLOR_DEFAULT, OWL_COLOR_DEFAULT);
}
/* Internal function. Parse attrbute character. */
static void _owl_fmtext_update_attributes(gunichar c, char *attr, short *fgcolor, short *bgcolor)
{
if ((c & OWL_FMTEXT_UC_ATTR) == OWL_FMTEXT_UC_ATTR) {
*attr = c & OWL_FMTEXT_UC_ATTR_MASK;
}
else if ((c & OWL_FMTEXT_UC_COLOR_BASE) == OWL_FMTEXT_UC_COLOR_BASE) {
if ((c & OWL_FMTEXT_UC_BGCOLOR) == OWL_FMTEXT_UC_BGCOLOR) {
*bgcolor = (c == OWL_FMTEXT_UC_BGDEFAULT
? OWL_COLOR_DEFAULT
: c & OWL_FMTEXT_UC_COLOR_MASK);
}
else if ((c & OWL_FMTEXT_UC_FGCOLOR) == OWL_FMTEXT_UC_FGCOLOR) {
*fgcolor = (c == OWL_FMTEXT_UC_FGDEFAULT
? OWL_COLOR_DEFAULT
: c & OWL_FMTEXT_UC_COLOR_MASK);
}
}
}
/* Internal function. Scan for attribute characters. */
static void _owl_fmtext_scan_attributes(const owl_fmtext *f, int start, char *attr, short *fgcolor, short *bgcolor)
{
const char *p;
p = strchr(f->buff->str, OWL_FMTEXT_UC_STARTBYTE_UTF8);
while (p && p < f->buff->str + start) {
_owl_fmtext_update_attributes(g_utf8_get_char(p), attr, fgcolor, bgcolor);
p = strchr(p+1, OWL_FMTEXT_UC_STARTBYTE_UTF8);
}
}
/* Internal function. Append text from 'in' between index 'start'
* inclusive and 'stop' exclusive, to the end of 'f'. This function
* works with bytes.
*/
static void _owl_fmtext_append_fmtext(owl_fmtext *f, const owl_fmtext *in, int start, int stop)
{
char attr = 0;
short fgcolor = OWL_COLOR_DEFAULT;
short bgcolor = OWL_COLOR_DEFAULT;
_owl_fmtext_scan_attributes(in, start, &attr, &fgcolor, &bgcolor);
if (attr != OWL_FMTEXT_ATTR_NONE)
g_string_append_unichar(f->buff, OWL_FMTEXT_UC_ATTR | attr);
if (fgcolor != OWL_COLOR_DEFAULT)
g_string_append_unichar(f->buff, OWL_FMTEXT_UC_FGCOLOR | fgcolor);
if (bgcolor != OWL_COLOR_DEFAULT)
g_string_append_unichar(f->buff, OWL_FMTEXT_UC_BGCOLOR | bgcolor);
g_string_append_len(f->buff, in->buff->str+start, stop-start);
/* Reset attributes */
g_string_append_unichar(f->buff, OWL_FMTEXT_UC_BGDEFAULT);
g_string_append_unichar(f->buff, OWL_FMTEXT_UC_FGDEFAULT);
g_string_append_unichar(f->buff, OWL_FMTEXT_UC_ATTR | OWL_FMTEXT_UC_ATTR);
}
/* append fmtext 'in' to 'f' */
void owl_fmtext_append_fmtext(owl_fmtext *f, const owl_fmtext *in)
{
_owl_fmtext_append_fmtext(f, in, 0, in->buff->len);
}
/* Append 'nspaces' number of spaces to the end of 'f' */
void owl_fmtext_append_spaces(owl_fmtext *f, int nspaces)
{
int i;
for (i=0; i<nspaces; i++) {
owl_fmtext_append_normal(f, " ");
}
}
/* Return a plain version of the fmtext. Caller is responsible for
* freeing the return
*/
char *owl_fmtext_print_plain(const owl_fmtext *f)
{
return owl_strip_format_chars(f->buff->str);
}
static void _owl_fmtext_wattrset(WINDOW *w, int attrs)
{
wattrset(w, A_NORMAL);
if (attrs & OWL_FMTEXT_ATTR_BOLD) wattron(w, A_BOLD);
if (attrs & OWL_FMTEXT_ATTR_REVERSE) wattron(w, A_REVERSE);
if (attrs & OWL_FMTEXT_ATTR_UNDERLINE) wattron(w, A_UNDERLINE);
}
static void _owl_fmtext_update_colorpair(short fg, short bg, short *pair)
{
if (owl_global_get_hascolors(&g)) {
*pair = owl_fmtext_get_colorpair(fg, bg);
}
}
static void _owl_fmtext_wcolor_set(WINDOW *w, short pair)
{
if (owl_global_get_hascolors(&g)) {
wcolor_set(w,pair,NULL);
wbkgdset(w, COLOR_PAIR(pair));
}
}
/* add the formatted text to the curses window 'w'. The window 'w'
* must already be initiatlized with curses
*/
static void _owl_fmtext_curs_waddstr(const owl_fmtext *f, WINDOW *w, int do_search, char default_attrs, short default_fgcolor, short default_bgcolor)
{
/* char *tmpbuff; */
/* int position, trans1, trans2, trans3, len, lastsame; */
char *s, *p;
char attr;
short fg, bg, pair = 0;
if (w==NULL) {
owl_function_debugmsg("Hit a null window in owl_fmtext_curs_waddstr.");
return;
}
s = f->buff->str;
/* Set default attributes. */
attr = default_attrs;
fg = default_fgcolor;
bg = default_bgcolor;
_owl_fmtext_wattrset(w, attr);
_owl_fmtext_update_colorpair(fg, bg, &pair);
_owl_fmtext_wcolor_set(w, pair);
/* Find next possible format character. */
p = strchr(s, OWL_FMTEXT_UC_STARTBYTE_UTF8);
while(p) {
if (owl_fmtext_is_format_char(g_utf8_get_char(p))) {
/* Deal with all text from last insert to here. */
char tmp;
tmp = p[0];
p[0] = '\0';
if (do_search && owl_global_is_search_active(&g)) {
/* Search is active, so highlight search results. */
int start, end;
while (owl_regex_compare(owl_global_get_search_re(&g), s, &start, &end) == 0) {
/* Prevent an infinite loop matching the empty string. */
if (end == 0)
break;
/* Found search string, highlight it. */
waddnstr(w, s, start);
_owl_fmtext_wattrset(w, attr ^ OWL_FMTEXT_ATTR_REVERSE);
_owl_fmtext_wcolor_set(w, pair);
waddnstr(w, s + start, end - start);
_owl_fmtext_wattrset(w, attr);
_owl_fmtext_wcolor_set(w, pair);
s += end;
}
}
/* Deal with remaining part of string. */
waddstr(w, s);
p[0] = tmp;
/* Deal with new attributes. Process all consecutive formatting
* characters, and then apply defaults where relevant. */
while (owl_fmtext_is_format_char(g_utf8_get_char(p))) {
_owl_fmtext_update_attributes(g_utf8_get_char(p), &attr, &fg, &bg);
p = g_utf8_next_char(p);
}
attr |= default_attrs;
if (fg == OWL_COLOR_DEFAULT) fg = default_fgcolor;
if (bg == OWL_COLOR_DEFAULT) bg = default_bgcolor;
_owl_fmtext_wattrset(w, attr);
_owl_fmtext_update_colorpair(fg, bg, &pair);
_owl_fmtext_wcolor_set(w, pair);
/* Advance to next non-formatting character. */
s = p;
p = strchr(s, OWL_FMTEXT_UC_STARTBYTE_UTF8);
}
else {
p = strchr(p+1, OWL_FMTEXT_UC_STARTBYTE_UTF8);
}
}
if (s) {
waddstr(w, s);
}
wbkgdset(w, 0);
}
void owl_fmtext_curs_waddstr(const owl_fmtext *f, WINDOW *w, char default_attrs, short default_fgcolor, short default_bgcolor)
{
_owl_fmtext_curs_waddstr(f, w, 1, default_attrs, default_fgcolor, default_bgcolor);
}
void owl_fmtext_curs_waddstr_without_search(const owl_fmtext *f, WINDOW *w, char default_attrs, short default_fgcolor, short default_bgcolor)
{
_owl_fmtext_curs_waddstr(f, w, 0, default_attrs, default_fgcolor, default_bgcolor);
}
/* Expands tabs. Tabs are expanded as if given an initial indent of start. */
void owl_fmtext_expand_tabs(const owl_fmtext *in, owl_fmtext *out, int start) {
int col = start, numcopied = 0;
char *ptr;
for (ptr = in->buff->str;
ptr < in->buff->str + in->buff->len;
ptr = g_utf8_next_char(ptr)) {
gunichar c = g_utf8_get_char(ptr);
int chwidth;
if (c == '\t') {
/* Copy up to this tab */
_owl_fmtext_append_fmtext(out, in, numcopied, ptr - in->buff->str);
/* and then copy spaces for the tab. */
chwidth = OWL_TAB_WIDTH - (col % OWL_TAB_WIDTH);
owl_fmtext_append_spaces(out, chwidth);
col += chwidth;
numcopied = g_utf8_next_char(ptr) - in->buff->str;
} else {
/* Just update col. We'll append later. */
if (c == '\n') {
col = start;
} else if (!owl_fmtext_is_format_char(c)) {
col += mk_wcwidth(c);
}
}
}
/* Append anything we've missed. */
if (numcopied < in->buff->len)
_owl_fmtext_append_fmtext(out, in, numcopied, in->buff->len);
}
/* start with line 'aline' (where the first line is 0) and print
* 'lines' number of lines into 'out'
*/
int owl_fmtext_truncate_lines(const owl_fmtext *in, int aline, int lines, owl_fmtext *out)
{
const char *ptr1, *ptr2;
int i, offset;
/* find the starting line */
ptr1 = in->buff->str;
for (i = 0; i < aline; i++) {
ptr1 = strchr(ptr1, '\n');
if (!ptr1) return(-1);
ptr1++;
}
/* ptr1 now holds the starting point */
/* copy in the next 'lines' lines */
if (lines < 1) return(-1);
for (i = 0; i < lines; i++) {
offset = ptr1 - in->buff->str;
ptr2 = strchr(ptr1, '\n');
if (!ptr2) {
/* Copy to the end of the buffer. */
_owl_fmtext_append_fmtext(out, in, offset, in->buff->len);
return(-1);
}
/* Copy up to, and including, the new line. */
_owl_fmtext_append_fmtext(out, in, offset, (ptr2 - ptr1) + offset + 1);
ptr1 = ptr2 + 1;
}
return(0);
}
/* Implementation of owl_fmtext_truncate_cols. Does not support tabs in input. */
void _owl_fmtext_truncate_cols_internal(const owl_fmtext *in, int acol, int bcol, owl_fmtext *out)
{
const char *ptr_s, *ptr_e, *ptr_c, *last;
int col, st, padding, chwidth;
last = in->buff->str + in->buff->len - 1;
ptr_s = in->buff->str;
while (ptr_s <= last) {
ptr_e=strchr(ptr_s, '\n');
if (!ptr_e) {
/* but this shouldn't happen if we end in a \n */
break;
}
if (ptr_e == ptr_s) {
owl_fmtext_append_normal(out, "\n");
++ptr_s;
continue;
}
col = 0;
st = 0;
padding = 0;
chwidth = 0;
ptr_c = ptr_s;
while(ptr_c < ptr_e) {
gunichar c = g_utf8_get_char(ptr_c);
if (!owl_fmtext_is_format_char(c)) {
chwidth = mk_wcwidth(c);
if (col + chwidth > bcol) break;
if (col >= acol) {
if (st == 0) {
ptr_s = ptr_c;
padding = col - acol;
++st;
}
}
col += chwidth;
chwidth = 0;
}
ptr_c = g_utf8_next_char(ptr_c);
}
if (st) {
/* lead padding */
owl_fmtext_append_spaces(out, padding);
if (ptr_c == ptr_e) {
/* We made it to the newline. Append up to, and including it. */
_owl_fmtext_append_fmtext(out, in, ptr_s - in->buff->str, ptr_c - in->buff->str + 1);
}
else if (chwidth > 1) {
/* Last char is wide, truncate. */
_owl_fmtext_append_fmtext(out, in, ptr_s - in->buff->str, ptr_c - in->buff->str);
owl_fmtext_append_normal(out, "\n");
}
else {
/* Last char fits perfectly, We stop at the next char to make
* sure we get it all. */
ptr_c = g_utf8_next_char(ptr_c);
_owl_fmtext_append_fmtext(out, in, ptr_s - in->buff->str, ptr_c - in->buff->str);
}
}
else {
owl_fmtext_append_normal(out, "\n");
}
ptr_s = g_utf8_next_char(ptr_e);
}
}
/* Truncate the message so that each line begins at column 'acol' and
* ends at 'bcol' or sooner. The first column is number 0. The new
* message is placed in 'out'. The message is expected to end in a
* new line for now.
*
* NOTE: This needs to be modified to deal with backing up if we find
* a SPACING COMBINING MARK at the end of a line. If that happens, we
* should back up to the last non-mark character and stop there.
*
* NOTE: If a line ends at bcol, we omit the newline. This is so printing
* to ncurses works.
*/
void owl_fmtext_truncate_cols(const owl_fmtext *in, int acol, int bcol, owl_fmtext *out)
{
owl_fmtext notabs;
/* _owl_fmtext_truncate_cols_internal cannot handle tabs. */
if (strchr(in->buff->str, '\t')) {
owl_fmtext_init_null(&notabs);
owl_fmtext_expand_tabs(in, &notabs, 0);
_owl_fmtext_truncate_cols_internal(&notabs, acol, bcol, out);
owl_fmtext_cleanup(&notabs);
} else {
_owl_fmtext_truncate_cols_internal(in, acol, bcol, out);
}
}
/* Return the number of lines in 'f' */
int owl_fmtext_num_lines(const owl_fmtext *f)
{
int lines, i;
char *lastbreak, *p;
lines=0;
lastbreak = f->buff->str;
for (i = 0; i < f->buff->len; i++) {
if (f->buff->str[i]=='\n') {
lastbreak = f->buff->str + i;
lines++;
}
}
/* Check if there's a trailing line; formatting characters don't count. */
for (p = g_utf8_next_char(lastbreak);
p < f->buff->str + f->buff->len;
p = g_utf8_next_char(p)) {
if (!owl_fmtext_is_format_char(g_utf8_get_char(p))) {
lines++;
break;
}
}
return(lines);
}
/* Returns the line number, starting at 0, of the character which
* contains the byte at 'offset'. Note that a trailing newline is part
* of the line it ends. Also, while a trailing line of formatting
* characters does not contribute to owl_fmtext_num_lines, those
* characters are considered on a new line. */
int owl_fmtext_line_number(const owl_fmtext *f, int offset)
{
int i, lineno = 0;
if (offset >= f->buff->len)
offset = f->buff->len - 1;
for (i = 0; i < offset; i++) {
if (f->buff->str[i] == '\n')
lineno++;
}
return lineno;
}
/* Searches for line 'lineno' in 'f'. The returned range, [start,
* end), forms a half-open interval for the extent of the line. */
void owl_fmtext_line_extents(const owl_fmtext *f, int lineno, int *o_start, int *o_end)
{
int start, end;
char *newline;
for (start = 0; lineno > 0 && start < f->buff->len; start++) {
if (f->buff->str[start] == '\n')
lineno--;
}
newline = strchr(f->buff->str + start, '\n');
/* Include the newline, if it is there. */
end = newline ? newline - f->buff->str + 1 : f->buff->len;
if (o_start) *o_start = start;
if (o_end) *o_end = end;
}
const char *owl_fmtext_get_text(const owl_fmtext *f)
{
return f->buff->str;
}
int owl_fmtext_num_bytes(const owl_fmtext *f)
{
return f->buff->len;
}
/* Make a copy of the fmtext 'src' into 'dst' */
void owl_fmtext_copy(owl_fmtext *dst, const owl_fmtext *src)
{
dst->buff = g_string_new(src->buff->str);
}
/* Search 'f' for the regex 're' for matches starting at
* 'start'. Returns the offset of the first match, -1 if not
* found. This is a case-insensitive search.
*/
int owl_fmtext_search(const owl_fmtext *f, const owl_regex *re, int start)
{
int offset;
if (start > f->buff->len ||
owl_regex_compare(re, f->buff->str + start, &offset, NULL) != 0)
return -1;
return offset + start;
}
/* Append the text 'text' to 'f' and interpret the zephyr style
* formatting syntax to set appropriate attributes.
*/
void owl_fmtext_append_ztext(owl_fmtext *f, const char *text)
{
int stacksize, curattrs, curcolor;
const char *ptr, *txtptr, *tmpptr;
char *buff;
int attrstack[32], chrstack[32], colorstack[32];
curattrs=OWL_FMTEXT_ATTR_NONE;
curcolor=OWL_COLOR_DEFAULT;
stacksize=0;
txtptr=text;
while (1) {
ptr=strpbrk(txtptr, "@{[<()>]}");
if (!ptr) {
/* add all the rest of the text and exit */
owl_fmtext_append_attr(f, txtptr, curattrs, curcolor, OWL_COLOR_DEFAULT);
return;
} else if (ptr[0]=='@') {
/* add the text up to this point then deal with the stack */
buff=g_new(char, ptr-txtptr+20);
strncpy(buff, txtptr, ptr-txtptr);
buff[ptr-txtptr]='\0';
owl_fmtext_append_attr(f, buff, curattrs, curcolor, OWL_COLOR_DEFAULT);
g_free(buff);
/* update pointer to point at the @ */
txtptr=ptr;
/* now the stack */
/* if we've hit our max stack depth, print the @ and move on */
if (stacksize==32) {
owl_fmtext_append_attr(f, "@", curattrs, curcolor, OWL_COLOR_DEFAULT);
txtptr++;
continue;
}
/* if it's an @@, print an @ and continue */
if (txtptr[1]=='@') {
owl_fmtext_append_attr(f, "@", curattrs, curcolor, OWL_COLOR_DEFAULT);
txtptr+=2;
continue;
}
/* if there's no opener, print the @ and continue */
tmpptr=strpbrk(txtptr, "(<[{ ");
if (!tmpptr || tmpptr[0]==' ') {
owl_fmtext_append_attr(f, "@", curattrs, curcolor, OWL_COLOR_DEFAULT);
txtptr++;
continue;
}
/* check what command we've got, push it on the stack, start
using it, and continue ... unless it's a color command */
buff=g_new(char, tmpptr-ptr+20);
strncpy(buff, ptr, tmpptr-ptr);
buff[tmpptr-ptr]='\0';
if (!strcasecmp(buff, "@bold")) {
attrstack[stacksize]=OWL_FMTEXT_ATTR_BOLD;
chrstack[stacksize]=tmpptr[0];
colorstack[stacksize]=curcolor;
stacksize++;
curattrs|=OWL_FMTEXT_ATTR_BOLD;
txtptr+=6;
g_free(buff);
continue;
} else if (!strcasecmp(buff, "@b")) {
attrstack[stacksize]=OWL_FMTEXT_ATTR_BOLD;
chrstack[stacksize]=tmpptr[0];
colorstack[stacksize]=curcolor;
stacksize++;
curattrs|=OWL_FMTEXT_ATTR_BOLD;
txtptr+=3;
g_free(buff);
continue;
} else if (!strcasecmp(buff, "@i")) {
attrstack[stacksize]=OWL_FMTEXT_ATTR_UNDERLINE;
chrstack[stacksize]=tmpptr[0];
colorstack[stacksize]=curcolor;
stacksize++;
curattrs|=OWL_FMTEXT_ATTR_UNDERLINE;
txtptr+=3;
g_free(buff);
continue;
} else if (!strcasecmp(buff, "@italic")) {
attrstack[stacksize]=OWL_FMTEXT_ATTR_UNDERLINE;
chrstack[stacksize]=tmpptr[0];
colorstack[stacksize]=curcolor;
stacksize++;
curattrs|=OWL_FMTEXT_ATTR_UNDERLINE;
txtptr+=8;
g_free(buff);
continue;
} else if (!strcasecmp(buff, "@")) {
attrstack[stacksize]=OWL_FMTEXT_ATTR_NONE;
chrstack[stacksize]=tmpptr[0];
colorstack[stacksize]=curcolor;
stacksize++;
txtptr+=2;
g_free(buff);
continue;
/* if it's a color read the color, set the current color and
continue */
} else if (!strcasecmp(buff, "@color")
&& owl_global_get_hascolors(&g)
&& owl_global_is_colorztext(&g)) {
g_free(buff);
txtptr+=7;
tmpptr=strpbrk(txtptr, "@{[<()>]}");
if (tmpptr &&
((txtptr[-1]=='(' && tmpptr[0]==')') ||
(txtptr[-1]=='<' && tmpptr[0]=='>') ||
(txtptr[-1]=='[' && tmpptr[0]==']') ||
(txtptr[-1]=='{' && tmpptr[0]=='}'))) {
/* grab the color name */
buff=g_new(char, tmpptr-txtptr+20);
strncpy(buff, txtptr, tmpptr-txtptr);
buff[tmpptr-txtptr]='\0';
/* set it as the current color */
curcolor=owl_util_string_to_color(buff);
if (curcolor == OWL_COLOR_INVALID)
curcolor = OWL_COLOR_DEFAULT;
g_free(buff);
txtptr=tmpptr+1;
continue;
} else {
}
} else {
/* if we didn't understand it, we'll print it. This is different from zwgc
* but zwgc seems to be smarter about some screw cases than I am
*/
owl_fmtext_append_attr(f, "@", curattrs, curcolor, OWL_COLOR_DEFAULT);
txtptr++;
continue;
}
} else if (ptr[0]=='}' || ptr[0]==']' || ptr[0]==')' || ptr[0]=='>') {
/* add the text up to this point first */
buff=g_new(char, ptr-txtptr+20);
strncpy(buff, txtptr, ptr-txtptr);
buff[ptr-txtptr]='\0';
owl_fmtext_append_attr(f, buff, curattrs, curcolor, OWL_COLOR_DEFAULT);
g_free(buff);
/* now deal with the closer */
txtptr=ptr;
/* first, if the stack is empty we must bail (just print and go) */
if (stacksize==0) {
buff=g_new(char, 5);
buff[0]=ptr[0];
buff[1]='\0';
owl_fmtext_append_attr(f, buff, curattrs, curcolor, OWL_COLOR_DEFAULT);
g_free(buff);
txtptr++;
continue;
}
/* if the closing char is what's on the stack, turn off the
attribue and pop the stack */
if ((ptr[0]==')' && chrstack[stacksize-1]=='(') ||
(ptr[0]=='>' && chrstack[stacksize-1]=='<') ||
(ptr[0]==']' && chrstack[stacksize-1]=='[') ||
(ptr[0]=='}' && chrstack[stacksize-1]=='{')) {
int i;
stacksize--;
curattrs=OWL_FMTEXT_ATTR_NONE;
curcolor = colorstack[stacksize];
for (i=0; i<stacksize; i++) {
curattrs|=attrstack[i];
}
txtptr+=1;
continue;
} else {
/* otherwise print and continue */
buff=g_new(char, 5);
buff[0]=ptr[0];
buff[1]='\0';
owl_fmtext_append_attr(f, buff, curattrs, curcolor, OWL_COLOR_DEFAULT);
g_free(buff);
txtptr++;
continue;
}
} else {
/* we've found an unattached opener, print everything and move on */
buff=g_new(char, ptr-txtptr+20);
strncpy(buff, txtptr, ptr-txtptr+1);
buff[ptr-txtptr+1]='\0';
owl_fmtext_append_attr(f, buff, curattrs, curcolor, OWL_COLOR_DEFAULT);
g_free(buff);
txtptr=ptr+1;
continue;
}
}
}
/* requires that the list values are strings or NULL.
* joins the elements together with join_with.
* If format_fn is specified, passes it the list element value
* and it will return a string which this needs to free. */
void owl_fmtext_append_list(owl_fmtext *f, const owl_list *l, const char *join_with, char *(format_fn)(const char *))
{
int i, size;
const char *elem;
char *text;
size = owl_list_get_size(l);
for (i=0; i<size; i++) {
elem = owl_list_get_element(l,i);
if (elem && format_fn) {
text = format_fn(elem);
if (text) {
owl_fmtext_append_normal(f, text);
g_free(text);
}
} else if (elem) {
owl_fmtext_append_normal(f, elem);
}
if ((i < size-1) && join_with) {
owl_fmtext_append_normal(f, join_with);
}
}
}
/* Free all memory allocated by the object */
void owl_fmtext_cleanup(owl_fmtext *f)
{
if (f->buff) g_string_free(f->buff, true);
f->buff = NULL;
}
/*** Color Pair manager ***/
void owl_fmtext_init_colorpair_mgr(owl_colorpair_mgr *cpmgr)
{
/* This could be a bitarray if we wanted to save memory. */
short i;
/* The test is <= because we allocate COLORS+1 entries. */
cpmgr->pairs = g_new(short *, COLORS + 1);
for(i = 0; i <= COLORS; i++) {
cpmgr->pairs[i] = g_new(short, COLORS + 1);
}
owl_fmtext_reset_colorpairs(cpmgr);
}
/* Reset used list */
void owl_fmtext_reset_colorpairs(owl_colorpair_mgr *cpmgr)
{
short i, j;
cpmgr->overflow = false;
cpmgr->next = 8;
/* The test is <= because we allocated COLORS+1 entries. */
for(i = 0; i <= COLORS; i++) {
for(j = 0; j <= COLORS; j++) {
cpmgr->pairs[i][j] = -1;
}
}
if (owl_global_get_hascolors(&g)) {
for(i = 0; i < 8; i++) {
short fg, bg;
if (i >= COLORS) continue;
pair_content(i, &fg, &bg);
cpmgr->pairs[fg+1][bg+1] = i;
}
}
}
/* Assign pairs by request */
short owl_fmtext_get_colorpair(int fg, int bg)
{
owl_colorpair_mgr *cpmgr;
short pair;
/* Sanity (Bounds) Check */
if (fg > COLORS || fg < OWL_COLOR_DEFAULT) fg = OWL_COLOR_DEFAULT;
if (bg > COLORS || bg < OWL_COLOR_DEFAULT) bg = OWL_COLOR_DEFAULT;
#ifdef HAVE_USE_DEFAULT_COLORS
if (fg == OWL_COLOR_DEFAULT) fg = -1;
#else
if (fg == OWL_COLOR_DEFAULT) fg = 0;
if (bg == OWL_COLOR_DEFAULT) bg = 0;
#endif
/* looking for a pair we already set up for this draw. */
cpmgr = owl_global_get_colorpair_mgr(&g);
pair = cpmgr->pairs[fg+1][bg+1];
if (!(pair != -1 && pair < cpmgr->next)) {
/* If we didn't find a pair, search for a free one to assign. */
pair = (cpmgr->next < COLOR_PAIRS) ? cpmgr->next : -1;
if (pair != -1) {
/* We found a free pair, initialize it. */
init_pair(pair, fg, bg);
cpmgr->pairs[fg+1][bg+1] = pair;
cpmgr->next++;
}
else if (bg != OWL_COLOR_DEFAULT) {
/* We still don't have a pair, drop the background color. Too bad. */
owl_function_debugmsg("colorpairs: color shortage - dropping background color.");
cpmgr->overflow = true;
pair = owl_fmtext_get_colorpair(fg, OWL_COLOR_DEFAULT);
}
else {
/* We still don't have a pair, defaults all around. */
owl_function_debugmsg("colorpairs: color shortage - dropping foreground and background color.");
cpmgr->overflow = true;
pair = 0;
}
}
return pair;
}
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