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-rw-r--r--test/editor.cxx357
1 files changed, 351 insertions, 6 deletions
diff --git a/test/editor.cxx b/test/editor.cxx
index 5319471cb..faed3942a 100644
--- a/test/editor.cxx
+++ b/test/editor.cxx
@@ -1,5 +1,5 @@
//
-// "$Id: editor.cxx,v 1.2.2.3.2.7 2002/01/01 15:11:32 easysw Exp $"
+// "$Id: editor.cxx,v 1.2.2.3.2.8 2002/06/09 13:35:49 easysw Exp $"
//
// A simple text editor program for the Fast Light Tool Kit (FLTK).
//
@@ -32,6 +32,7 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <ctype.h>
#include <errno.h>
#include <FL/Fl.H>
@@ -50,9 +51,345 @@
int changed = 0;
char filename[256] = "";
char title[256];
-Fl_Text_Buffer *textbuf;
+Fl_Text_Buffer *textbuf = 0;
+
+
+// Syntax highlighting stuff...
+Fl_Text_Buffer *stylebuf = 0;
+Fl_Text_Display::Style_Table_Entry
+ styletable[] =
+ {
+ { FL_BLACK, FL_COURIER, FL_NORMAL_SIZE }, // A - Plain
+ { FL_DARK_GREEN, FL_COURIER_ITALIC, FL_NORMAL_SIZE }, // B - Line comments
+ { FL_DARK_GREEN, FL_COURIER_ITALIC, FL_NORMAL_SIZE }, // C - Block comments
+ { FL_BLUE, FL_COURIER, FL_NORMAL_SIZE }, // D - Strings
+ { FL_DARK_RED, FL_COURIER, FL_NORMAL_SIZE }, // E - Directives
+ { FL_DARK_RED, FL_COURIER_BOLD, FL_NORMAL_SIZE }, // F - Types
+ { FL_BLUE, FL_COURIER_BOLD, FL_NORMAL_SIZE } // G - Keywords
+ };
+const char *code_keywords[] = // List of known C/C++ keywords...
+ {
+ "and",
+ "and_eq",
+ "asm",
+ "bitand",
+ "bitor",
+ "break",
+ "case",
+ "catch",
+ "compl",
+ "continue",
+ "default",
+ "delete",
+ "do",
+ "else",
+ "false",
+ "for",
+ "goto",
+ "if",
+ "new",
+ "not",
+ "not_eq",
+ "operator",
+ "or",
+ "or_eq",
+ "return",
+ "switch",
+ "template",
+ "this",
+ "throw",
+ "true",
+ "try",
+ "while",
+ "xor",
+ "xor_eq"
+ };
+const char *code_types[] = // List of known C/C++ types...
+ {
+ "auto",
+ "bool",
+ "char",
+ "class",
+ "const",
+ "const_cast",
+ "double",
+ "dynamic_cast",
+ "enum",
+ "explicit",
+ "extern",
+ "float",
+ "friend",
+ "inline",
+ "int",
+ "long",
+ "mutable",
+ "namespace",
+ "private",
+ "protected",
+ "public",
+ "register",
+ "short",
+ "signed",
+ "sizeof",
+ "static",
+ "static_cast",
+ "struct",
+ "template",
+ "typedef",
+ "typename",
+ "union",
+ "unsigned",
+ "virtual",
+ "void",
+ "volatile"
+ };
+//
+// 'compare_keywords()' - Compare two keywords...
+//
+
+int
+compare_keywords(const void *a,
+ const void *b) {
+ return (strcmp(*((const char **)a), *((const char **)b)));
+}
+
+
+//
+// 'style_parse()' - Parse text and produce style data.
+//
+
+void
+style_parse(const char *text,
+ char *style,
+ int length) {
+ char current;
+ int col;
+ int last;
+ char buf[255],
+ *bufptr;
+ const char *temp;
+
+ for (current = *style, col = 0, last = 0; length > 0; length --, text ++) {
+ if (current == 'A') {
+ // Check for directives, comments, strings, and keywords...
+ if (col == 0 && *text == '#') {
+ // Set style to directive
+ current = 'E';
+ } else if (strncmp(text, "//", 2) == 0) {
+ current = 'B';
+ } else if (strncmp(text, "/*", 2) == 0) {
+ current = 'C';
+ } else if (strncmp(text, "\\\"", 2) == 0) {
+ // Quoted quote...
+ *style++ = current;
+ *style++ = current;
+ text ++;
+ length --;
+ col += 2;
+ continue;
+ } else if (*text == '\"') {
+ current = 'D';
+ } else if (!last && islower(*text)) {
+ // Might be a keyword...
+ for (temp = text, bufptr = buf;
+ islower(*temp) && bufptr < (buf + sizeof(buf) - 1);
+ *bufptr++ = *temp++);
+
+ if (!islower(*temp)) {
+ *bufptr = '\0';
+
+ bufptr = buf;
+
+ if (bsearch(&bufptr, code_types,
+ sizeof(code_types) / sizeof(code_types[0]),
+ sizeof(code_types[0]), compare_keywords)) {
+ while (text < temp) {
+ *style++ = 'F';
+ text ++;
+ length --;
+ col ++;
+ }
+
+ text --;
+ length ++;
+ last = 1;
+ continue;
+ } else if (bsearch(&bufptr, code_keywords,
+ sizeof(code_keywords) / sizeof(code_keywords[0]),
+ sizeof(code_keywords[0]), compare_keywords)) {
+ while (text < temp) {
+ *style++ = 'G';
+ text ++;
+ length --;
+ col ++;
+ }
+
+ text --;
+ length ++;
+ last = 1;
+ continue;
+ }
+ }
+ }
+ } else if (current == 'C' && strncmp(text, "*/", 2) == 0) {
+ // Close a C comment...
+ *style++ = current;
+ *style++ = current;
+ text ++;
+ length --;
+ current = 'A';
+ col += 2;
+ continue;
+ } else if (current == 'D') {
+ // Continuing in string...
+ if (strncmp(text, "\\\"", 2) == 0) {
+ // Quoted end quote...
+ *style++ = current;
+ *style++ = current;
+ text ++;
+ length --;
+ col += 2;
+ continue;
+ } else if (*text == '\"') {
+ // End quote...
+ *style++ = current;
+ col ++;
+ current = 'A';
+ continue;
+ }
+ }
+
+ // Copy style info...
+ if (current == 'A' && (*text == '{' || *text == '}')) *style++ = 'G';
+ else *style++ = current;
+ col ++;
+
+ last = isalnum(*text) || *text == '.';
+
+ if (*text == '\n') {
+ // Reset column and possibly reset the style
+ col = 0;
+ if (current == 'B' || current == 'E') current = 'A';
+ }
+ }
+}
+
+
+//
+// 'style_init()' - Initialize the style buffer...
+//
+
+void
+style_init(void) {
+ char *style = new char[textbuf->length() + 1];
+ char *text = textbuf->text();
+
+
+ memset(style, 'A', textbuf->length());
+ style[textbuf->length()] = '\0';
+
+ if (stylebuf) delete stylebuf;
+
+ style_parse(text, style, textbuf->length());
+
+ stylebuf = new Fl_Text_Buffer(textbuf->length());
+ stylebuf->text(style);
+ delete[] style;
+ free(text);
+}
+
+
+//
+// 'style_unfinished_cb()' - Update unfinished styles.
+//
+
+void
+style_unfinished_cb() {
+}
+
+
+//
+// 'style_update()' - Update the style buffer...
+//
+
+void
+style_update(int pos, // I - Position of update
+ int nInserted, // I - Number of inserted chars
+ int nDeleted, // I - Number of deleted chars
+ int nRestyled, // I - Number of restyled chars
+ const char *deletedText, // I - Text that was deleted
+ void *cbArg) { // I - Callback data
+ int start, // Start of text
+ end; // End of text
+ char last, // Last style on line
+ *style, // Style data
+ *text; // Text data
+
+
+ // If this is just a selection change, just unselect the style buffer...
+ if (nInserted == 0 && nDeleted == 0) {
+ stylebuf->unselect();
+ return;
+ }
+
+ // Track changes in the text buffer...
+ if (nInserted > 0) {
+ // Insert characters into the style buffer...
+ style = new char[nInserted + 1];
+ memset(style, 'A', nInserted);
+ style[nInserted] = '\0';
+
+ stylebuf->replace(pos, pos + nDeleted, style);
+ delete[] style;
+ } else {
+ // Just delete characters in the style buffer...
+ stylebuf->remove(pos, pos + nDeleted);
+ }
+
+ // Select the area that was just updated to avoid unnecessary
+ // callbacks...
+ stylebuf->select(pos, pos + nInserted - nDeleted);
+
+ // Re-parse the changed region; we do this by parsing from the
+ // beginning of the line of the changed region to the end of
+ // the line of the changed region... Then we check the last
+ // style character and keep updating if we have a multi-line
+ // comment character...
+ start = textbuf->line_start(pos);
+ end = textbuf->line_end(pos + nInserted - nDeleted);
+ text = textbuf->text_range(start, end);
+ style = stylebuf->text_range(start, end);
+ last = style[end - start - 1];
+
+ style_parse(text, style, end - start);
+
+ stylebuf->replace(start, end, style);
+ ((Fl_Text_Editor *)cbArg)->redisplay_range(start, end);
+
+ if (last != style[end - start - 1]) {
+ // The last character on the line changed styles, so reparse the
+ // remainder of the buffer...
+ free(text);
+ free(style);
+
+ end = textbuf->length();
+ text = textbuf->text_range(start, end);
+ style = stylebuf->text_range(start, end);
+
+ style_parse(text, style, end - start);
+
+ stylebuf->replace(start, end, style);
+ ((Fl_Text_Editor *)cbArg)->redisplay_range(start, end);
+ }
+
+ free(text);
+ free(style);
+}
+
+
+// Editor window functions and class...
void save_cb();
void saveas_cb();
void find2_cb(Fl_Widget*, void*);
@@ -131,6 +468,7 @@ void load_file(char *newfile, int ipos) {
else
if (!insert) strcpy(filename, newfile);
loading = 0;
+ style_init();
textbuf->call_modify_callbacks();
}
@@ -218,6 +556,7 @@ void new_cb(Fl_Widget*, void*) {
filename[0] = '\0';
textbuf->select(0, textbuf->length());
textbuf->remove_selection();
+ style_init();
changed = 0;
textbuf->call_modify_callbacks();
}
@@ -390,17 +729,22 @@ Fl_Menu_Item menuitems[] = {
};
Fl_Window* new_view() {
- EditorWindow* w = new EditorWindow(512, 384, title);
+ EditorWindow* w = new EditorWindow(660, 400, title);
w->begin();
- Fl_Menu_Bar* m = new Fl_Menu_Bar(0, 0, 512, 30);
+ Fl_Menu_Bar* m = new Fl_Menu_Bar(0, 0, 660, 30);
m->copy(menuitems, w);
- w->editor = new Fl_Text_Editor(0, 30, 512, 354);
+ w->editor = new Fl_Text_Editor(0, 30, 660, 370);
w->editor->buffer(textbuf);
+ w->editor->highlight_data(stylebuf, styletable,
+ sizeof(styletable) / sizeof(styletable[0]),
+ 'A', style_unfinished_cb, 0);
w->editor->textfont(FL_COURIER);
w->end();
w->resizable(w->editor);
w->callback((Fl_Callback *)close_cb, w);
+
textbuf->add_modify_callback(changed_cb, w);
+ textbuf->add_modify_callback(style_update, w->editor);
textbuf->call_modify_callbacks();
num_windows++;
return w;
@@ -408,6 +752,7 @@ Fl_Window* new_view() {
int main(int argc, char **argv) {
textbuf = new Fl_Text_Buffer;
+ style_init();
Fl_Window* window = new_view();
@@ -419,5 +764,5 @@ int main(int argc, char **argv) {
}
//
-// End of "$Id: editor.cxx,v 1.2.2.3.2.7 2002/01/01 15:11:32 easysw Exp $".
+// End of "$Id: editor.cxx,v 1.2.2.3.2.8 2002/06/09 13:35:49 easysw Exp $".
//
generated by cgit v1.2.3 (git 2.25.1) at 2026-02-08 19:53:00 +0000