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Comments for text editor functions. More to come tomorrow.

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This commit is contained in:
Ian Thompson 2008-10-06 22:08:14 +00:00
parent 160609bce8
commit 8d73ea72a7
1 changed files with 78 additions and 91 deletions
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169
source/blender/src/drawtext.c
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@ -136,7 +136,6 @@ static int check_identifier(char ch);
static int check_whitespace(char ch); static int check_whitespace(char ch);
static int get_wrap_width(SpaceText *st); static int get_wrap_width(SpaceText *st);
//static int get_wrap_points(SpaceText *st, char *line);
static void get_suggest_prefix(Text *text, int offset); static void get_suggest_prefix(Text *text, int offset);
static void confirm_suggestion(Text *text, int skipleft); static void confirm_suggestion(Text *text, int skipleft);
@ -238,6 +237,13 @@ static int render_string (SpaceText *st, char *in)
return r; return r;
} }
/* Checks the specified source string for a Python built-in function name. This
name must start at the beginning of the source string and must be followed by
a non-identifier (see check_identifier(char)) or null character.
If a built-in function is found, the length of the matching name is returned.
Otherwise, -1 is returned.
*/
static int find_builtinfunc(char *string) static int find_builtinfunc(char *string)
{ {
int a, i; int a, i;
@ -249,54 +255,51 @@ static int find_builtinfunc(char *string)
for (a=0; a<30; a++) { for (a=0; a<30; a++) {
i = 0; i = 0;
while (1) { while (1) {
/* If we hit the end of a keyword... (eg. "def") */
if (builtinfuncs[a][i]=='\0') { if (builtinfuncs[a][i]=='\0') {
/* If we still have identifier chars in the source (eg. "definate") */
if (check_identifier(string[i])) if (check_identifier(string[i]))
i = -1; i = -1; /* No match */
break; break; /* Next keyword if no match, otherwise we're done */
/* If chars mismatch, move on to next keyword */
} else if (string[i]!=builtinfuncs[a][i]) { } else if (string[i]!=builtinfuncs[a][i]) {
i = -1; i = -1;
break; break; /* Break inner loop, start next keyword */
} }
i++; i++;
} }
if (i>0) break; if (i>0) break; /* If we have a match, we're done */
} }
return i; return i;
} }
/* Checks the specified source string for a Python special name. This name must
start at the beginning of the source string and must be followed by a non-
identifier (see check_identifier(char)) or null character.
If a special name is found, the length of the matching name is returned.
Otherwise, -1 is returned.
*/
static int find_specialvar(char *string) static int find_specialvar(char *string)
{ {
int i = 0; int i = 0;
/* Check for "def" */
if (string[0]=='d' && string[1]=='e' && string[2]=='f') if (string[0]=='d' && string[1]=='e' && string[2]=='f')
i = 3; i = 3;
/* Check for "class" */
else if (string[0]=='c' && string[1]=='l' && string[2]=='a' && string[3]=='s' && string[4]=='s') else if (string[0]=='c' && string[1]=='l' && string[2]=='a' && string[3]=='s' && string[4]=='s')
i = 5; i = 5;
/* If next source char is an identifier (eg. 'i' in "definate") no match */
if (i==0 || check_identifier(string[i])) if (i==0 || check_identifier(string[i]))
return -1; return -1;
return i; return i;
} }
#if 0 // not used /* Ensures the format string for the given line is long enough, reallocating
static void print_format(SpaceText *st, TextLine *line) { as needed. Allocation is done here, alone, to ensure consitency.
int i, a; */
char *s, *f; static int check_format_len(TextLine *line, unsigned int len)
s = line->line;
f = line->format;
for (a=0; *s; s++) {
if (*s == '\t') {
for (i=st->tabnumber-(a%st->tabnumber); i>0; i--)
printf(" "), f++, a++;
} else
printf("%c", *s), f++, a++;
}
printf("\n%s [%#x]\n", line->format, (int) (f[strlen(f)+1]));
}
#endif // not used
/* Ensures the format string for the given line is long enough, reallocating as needed */
static int check_format_len(TextLine *line, unsigned int len)
{ {
if (line->format) { if (line->format) {
if (strlen(line->format) < len) { if (strlen(line->format) < len) {
@ -311,20 +314,21 @@ static int check_format_len(TextLine *line, unsigned int len)
return 1; return 1;
} }
/* Formats the specified line and if allowed and needed will move on to the /* Formats the specified line. If do_next is set, the process will move on to
* next line. The format string contains the following characters: the succeeding line if it is affected (eg. multiline strings). Format strings
* '_' Whitespace may contain any of the following characters:
* '#' Comment text '_' Whitespace
* '!' Punctuation and other symbols '#' Comment text
* 'n' Numerals '!' Punctuation and other symbols
* 'l' String letters 'n' Numerals
* 'v' Special variables (class, def) 'l' String letters
* 'b' Built-in names (print, for, etc.) 'v' Special variables (class, def)
* 'q' Other text (identifiers, etc.) 'b' Built-in names (print, for, etc.)
* It is terminated with a null-terminator '\0' followed by a continuation 'q' Other text (identifiers, etc.)
* flag indicating whether the line is part of a multi-line string. It is terminated with a null-terminator '\0' followed by a continuation
flag indicating whether the line is part of a multi-line string.
*/ */
void txt_format_line(SpaceText *st, TextLine *line, int do_next) void txt_format_line(SpaceText *st, TextLine *line, int do_next)
{ {
char *str, *fmt, orig, cont, find, prev = ' '; char *str, *fmt, orig, cont, find, prev = ' ';
int len, i; int len, i;
@ -435,6 +439,7 @@ void txt_format_line(SpaceText *st, TextLine *line, int do_next)
} }
} }
/* Formats every line of the current text */
void txt_format_text(SpaceText *st) void txt_format_text(SpaceText *st)
{ {
TextLine *linep; TextLine *linep;
@ -445,7 +450,8 @@ void txt_format_text(SpaceText *st)
txt_format_line(st, linep, 0); txt_format_line(st, linep, 0);
} }
static void format_draw_color(char formatchar) /* Sets the current drawing color based on the format character specified */
static void format_draw_color(char formatchar)
{ {
switch (formatchar) { switch (formatchar) {
case '_': /* Whitespace */ case '_': /* Whitespace */
@ -682,7 +688,7 @@ static void set_cursor_to_pos (SpaceText *st, int x, int y, int sel)
if(!sel) txt_pop_sel(text); if(!sel) txt_pop_sel(text);
} }
static int get_wrap_width(SpaceText *st) static int get_wrap_width(SpaceText *st)
{ {
int x, max; int x, max;
@ -691,35 +697,8 @@ static int get_wrap_width(SpaceText *st)
return max>8 ? max : 8; return max>8 ? max : 8;
} }
#if 0 // not used
/* Returns the number of wrap points (or additional lines) in the given string */
static int get_wrap_points(SpaceText *st, char *line)
{
int start, end, taboffs, i, max, count;
if (!st->wordwrap) return 0;
end= max= get_wrap_width(st);
count= taboffs= start= 0;
for (i=0; line[i]!='\0'; i++) {
if (i-start+taboffs>=max) {
count++;
start= end;
end += max;
taboffs= 0;
} else if (line[i]==' ' || line[i]=='\t' || line[i]=='-') {
end = i+1;
if (line[i]=='\t')
taboffs += st->tabnumber-(i-start)%st->tabnumber;
}
}
return count;
}
#endif // not used
/* Sets (offl, offc) for transforming (line, curs) to its wrapped position */ /* Sets (offl, offc) for transforming (line, curs) to its wrapped position */
static void wrap_offset(SpaceText *st, TextLine *linein, int cursin, int *offl, int *offc) static void wrap_offset(SpaceText *st, TextLine *linein, int cursin, int *offl, int *offc)
{ {
Text *text; Text *text;
TextLine *linep; TextLine *linep;
@ -797,7 +776,7 @@ static int get_char_pos(SpaceText *st, char *line, int cur)
return a; return a;
} }
static void draw_markers(SpaceText *st) static void draw_markers(SpaceText *st)
{ {
Text *text= st->text; Text *text= st->text;
TextMarker *marker, *next; TextMarker *marker, *next;
@ -869,7 +848,7 @@ static void draw_markers(SpaceText *st)
} }
} }
static void draw_cursor(SpaceText *st) static void draw_cursor(SpaceText *st)
{ {
Text *text= st->text; Text *text= st->text;
int vcurl, vcurc, vsell, vselc, hidden=0; int vcurl, vcurc, vsell, vselc, hidden=0;
@ -1063,6 +1042,7 @@ static void draw_textscroll(SpaceText *st)
uiEmboss(st->txtbar.xmin, st->txtbar.ymin, st->txtbar.xmax, st->txtbar.ymax, st->flags & ST_SCROLL_SELECT); uiEmboss(st->txtbar.xmin, st->txtbar.ymin, st->txtbar.xmax, st->txtbar.ymax, st->flags & ST_SCROLL_SELECT);
} }
/* Moves the view vertically by the specified number of lines */
static void screen_skip(SpaceText *st, int lines) static void screen_skip(SpaceText *st, int lines)
{ {
int last; int last;
@ -1080,6 +1060,12 @@ static void screen_skip(SpaceText *st, int lines)
if (st->top<0) st->top= 0; if (st->top<0) st->top= 0;
} }
/* Moves the cursor vertically by the specified number of lines.
If the destination line is shorter than the current cursor position, the
cursor will be positioned at the end of this line.
This is to replace screen_skip for PageUp/Down operations.
*/
static void cursor_skip(SpaceText *st, int lines, int sel) static void cursor_skip(SpaceText *st, int lines, int sel)
{ {
Text *text; Text *text;
@ -1112,9 +1098,8 @@ static void cursor_skip(SpaceText *st, int lines, int sel)
txt_undo_add_toop(st->text, sel?UNDO_STO:UNDO_CTO, oldl, oldc, txt_get_span(text->lines.first, *linep), *charp); txt_undo_add_toop(st->text, sel?UNDO_STO:UNDO_CTO, oldl, oldc, txt_get_span(text->lines.first, *linep), *charp);
} }
/* /* Handles text scrolling via grabbing the view (MMB, mode 1) or with the
* mode 1 == view scroll scrollbar (mode 2)
* mode 2 == scrollbar
*/ */
static void do_textscroll(SpaceText *st, int mode) static void do_textscroll(SpaceText *st, int mode)
{ {
@ -1297,7 +1282,7 @@ static int do_suggest_select(SpaceText *st)
return 1; return 1;
} }
static void pop_suggest_list() static void pop_suggest_list()
{ {
SuggItem *item, *sel; SuggItem *item, *sel;
int *top, i; int *top, i;
@ -1474,7 +1459,7 @@ void draw_suggestion_list(SpaceText *st)
} }
} }
static short check_blockhandler(SpaceText *st, short handler) static short check_blockhandler(SpaceText *st, short handler)
{ {
short a; short a;
@ -1483,10 +1468,12 @@ static short check_blockhandler(SpaceText *st, short handler)
return 0; return 0;
} }
/* Find and replace GUI panel */
static void text_panel_find(short cntrl) // TEXT_HANDLER_FIND static void text_panel_find(short cntrl) // TEXT_HANDLER_FIND
{ {
uiBlock *block; uiBlock *block;
/* Ensure that find and replace buffers have been allocated */
if (!g_find_str || !g_replace_str) { if (!g_find_str || !g_replace_str) {
g_find_str= MEM_mallocN(TXT_MAXFINDSTR+1, "find_string"); g_find_str= MEM_mallocN(TXT_MAXFINDSTR+1, "find_string");
g_replace_str= MEM_mallocN(TXT_MAXFINDSTR+1, "replace_string"); g_replace_str= MEM_mallocN(TXT_MAXFINDSTR+1, "replace_string");
@ -1512,7 +1499,7 @@ static void text_panel_find(short cntrl) // TEXT_HANDLER_FIND
} }
/* mode: 0 find only, 1 replace/find, 2 mark all occurrences */ /* mode: 0 find only, 1 replace/find, 2 mark all occurrences */
void find_and_replace(SpaceText *st, short mode) void find_and_replace(SpaceText *st, short mode)
{ {
Text *start= NULL, *text= st->text; Text *start= NULL, *text= st->text;
int flags, first= 1; int flags, first= 1;
@ -1574,7 +1561,7 @@ void find_and_replace(SpaceText *st, short mode)
} while (mode==2); } while (mode==2);
} }
static void do_find_buttons(val) static void do_find_buttons(val)
{ {
Text *text; Text *text;
SpaceText *st; SpaceText *st;
@ -1886,7 +1873,7 @@ void unlink_text(Text *text)
} }
} }
int jumptoline_interactive(SpaceText *st) int jumptoline_interactive(SpaceText *st)
{ {
short nlines= txt_get_span(st->text->lines.first, st->text->lines.last)+1; short nlines= txt_get_span(st->text->lines.first, st->text->lines.last)+1;
short tmp= txt_get_span(st->text->lines.first, st->text->curl)+1; short tmp= txt_get_span(st->text->lines.first, st->text->curl)+1;
@ -2020,7 +2007,7 @@ static char *winNewLine(char *buffer)
return(output); return(output);
} }
void txt_paste_clipboard(Text *text) void txt_paste_clipboard(Text *text)
{ {
char * buff; char * buff;
char *temp_buff; char *temp_buff;
@ -2042,7 +2029,7 @@ void get_selection_buffer(Text *text)
txt_insert_buf(text, buff); txt_insert_buf(text, buff);
} }
void txt_copy_clipboard(Text *text) void txt_copy_clipboard(Text *text)
{ {
char *temp; char *temp;
@ -2094,7 +2081,7 @@ static void set_tabs(Text *text)
st->currtab_set = setcurr_tab(text); st->currtab_set = setcurr_tab(text);
} }
static void wrap_move_bol(SpaceText *st, short sel) static void wrap_move_bol(SpaceText *st, short sel)
{ {
Text *text= st->text; Text *text= st->text;
int offl, offc, lin; int offl, offc, lin;
@ -2136,7 +2123,7 @@ static void wrap_move_eol(SpaceText *st, short sel)
} }
} }
static void wrap_move_up(SpaceText *st, short sel) static void wrap_move_up(SpaceText *st, short sel)
{ {
Text *text= st->text; Text *text= st->text;
int offl, offl_1, offc, fromline, toline, c, target; int offl, offl_1, offc, fromline, toline, c, target;
@ -2181,7 +2168,7 @@ static void wrap_move_up(SpaceText *st, short sel)
} }
} }
static void wrap_move_down(SpaceText *st, short sel) static void wrap_move_down(SpaceText *st, short sel)
{ {
Text *text= st->text; Text *text= st->text;
int offl, startoff, offc, fromline, toline, c, target; int offl, startoff, offc, fromline, toline, c, target;
@ -2228,7 +2215,7 @@ static void wrap_move_down(SpaceText *st, short sel)
} }
} }
static void get_suggest_prefix(Text *text, int offset) static void get_suggest_prefix(Text *text, int offset)
{ {
int i, len; int i, len;
char *line, tmp[256]; char *line, tmp[256];
@ -2251,7 +2238,7 @@ static void get_suggest_prefix(Text *text, int offset)
texttool_suggest_prefix(tmp); texttool_suggest_prefix(tmp);
} }
static void confirm_suggestion(Text *text, int skipleft) static void confirm_suggestion(Text *text, int skipleft)
{ {
SuggItem *sel; SuggItem *sel;
int i, over=0; int i, over=0;
@ -2285,7 +2272,7 @@ static void confirm_suggestion(Text *text, int skipleft)
texttool_text_clear(); texttool_text_clear();
} }
static short do_texttools(SpaceText *st, char ascii, unsigned short evnt, short val) static short do_texttools(SpaceText *st, char ascii, unsigned short evnt, short val)
{ {
int draw=0, tools=0, swallow=0, scroll=1; int draw=0, tools=0, swallow=0, scroll=1;
if (!texttool_text_is_active(st->text)) return 0; if (!texttool_text_is_active(st->text)) return 0;
@ -2445,7 +2432,7 @@ static short do_texttools(SpaceText *st, char ascii, unsigned short evnt, short
return swallow; return swallow;
} }
static short do_markers(SpaceText *st, char ascii, unsigned short evnt, short val) static short do_markers(SpaceText *st, char ascii, unsigned short evnt, short val)
{ {
Text *text; Text *text;
TextMarker *marker, *mrk, *nxt; TextMarker *marker, *mrk, *nxt;
@ -3348,14 +3335,14 @@ static int check_delim(char ch)
return 0; return 0;
} }
static int check_digit(char ch) static int check_digit(char ch)
{ {
if (ch < '0') return 0; if (ch < '0') return 0;
if (ch <= '9') return 1; if (ch <= '9') return 1;
return 0; return 0;
} }
static int check_identifier(char ch) static int check_identifier(char ch)
{ {
if (ch < '0') return 0; if (ch < '0') return 0;
if (ch <= '9') return 1; if (ch <= '9') return 1;
@ -3366,7 +3353,7 @@ static int check_identifier(char ch)
return 0; return 0;
} }
static int check_whitespace(char ch) static int check_whitespace(char ch)
{ {
if (ch == ' ' || ch == '\t' || ch == '\r' || ch == '\n') if (ch == ' ' || ch == '\t' || ch == '\r' || ch == '\n')
return 1; return 1;