227 lines
7.9 KiB
C
227 lines
7.9 KiB
C
|
#include <string.h>
|
||
|
|
|
||
|
|
#define SYNTAX_LIMIT (144)
|
||
|
|
|
||
|
|
#define EFFECT_NORMAL ('0')
|
||
|
|
#define EFFECT_BOLD ('1')
|
||
|
|
#define EFFECT_ITALIC ('3')
|
||
|
|
#define EFFECT_UNDERLINE ('4')
|
||
|
|
#define EFFECT_BLINK ('5')
|
||
|
|
#define EFFECT_REVERSE ('7')
|
||
|
|
|
||
|
|
#define COLOUR_GREY ('0')
|
||
|
|
#define COLOUR_RED ('1')
|
||
|
|
#define COLOUR_GREEN ('2')
|
||
|
|
#define COLOUR_YELLOW ('3')
|
||
|
|
#define COLOUR_BLUE ('4')
|
||
|
|
#define COLOUR_PINK ('5')
|
||
|
|
#define COLOUR_CYAN ('6')
|
||
|
|
#define COLOUR_WHITE ('7')
|
||
|
|
|
||
|
|
extern void syntax_c (void);
|
||
|
|
extern void syntax_ada (void);
|
||
|
|
|
||
|
|
extern char * syntax_highlight (char * string);
|
||
|
|
|
||
|
|
static size_t syntax_count = 0;
|
||
|
|
|
||
|
|
static int syntax_enrange [SYNTAX_LIMIT];
|
||
|
|
static int syntax_derange [SYNTAX_LIMIT];
|
||
|
|
static char syntax_begin [SYNTAX_LIMIT] [96];
|
||
|
|
static char syntax_end [SYNTAX_LIMIT] [96];
|
||
|
|
static char syntax_escape [SYNTAX_LIMIT];
|
||
|
|
static char syntax_colour [SYNTAX_LIMIT];
|
||
|
|
static char syntax_effect [SYNTAX_LIMIT];
|
||
|
|
|
||
|
|
static int character_compare_array (char character, char * character_array) {
|
||
|
|
size_t i = 0;
|
||
|
|
|
||
|
|
do {
|
||
|
|
if (character == character_array [i]) {
|
||
|
|
return (1);
|
||
|
|
}
|
||
|
|
} while (++i != strlen (character_array));
|
||
|
|
|
||
|
|
return (0);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void syntax_rule (int enrange,
|
||
|
|
int derange,
|
||
|
|
char * begin,
|
||
|
|
char * end,
|
||
|
|
char escape,
|
||
|
|
char colour,
|
||
|
|
char effect) {
|
||
|
|
if (syntax_count >= SYNTAX_LIMIT) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
strncpy (syntax_begin [syntax_count], begin, 96);
|
||
|
|
strncpy (syntax_end [syntax_count], end, 96);
|
||
|
|
|
||
|
|
syntax_enrange [syntax_count] = enrange;
|
||
|
|
syntax_derange [syntax_count] = derange;
|
||
|
|
syntax_escape [syntax_count] = escape;
|
||
|
|
syntax_colour [syntax_count] = colour;
|
||
|
|
syntax_effect [syntax_count] = effect;
|
||
|
|
|
||
|
|
++syntax_count;
|
||
|
|
}
|
||
|
|
|
||
|
|
static size_t syntax_loop (char * string,
|
||
|
|
size_t * length) {
|
||
|
|
size_t offset, subset, select;
|
||
|
|
|
||
|
|
for (select = offset = 0; select != syntax_count; ++select) {
|
||
|
|
if (syntax_enrange [select] == 0) {
|
||
|
|
if (syntax_derange [select] == 0) {
|
||
|
|
if (strncmp (string, syntax_begin [select], strlen (syntax_begin [select])) == 0) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
if ((strncmp (string, syntax_begin [select], strlen (syntax_begin [select])) == 0)
|
||
|
|
&& (character_compare_array (string [offset + strlen (syntax_begin [select])], syntax_end [select]) == 1)) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
for (subset = 0; subset != strlen (syntax_begin [select]); ++subset) {
|
||
|
|
if (string [offset] == syntax_begin [select] [subset]) {
|
||
|
|
goto selected;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
selected:
|
||
|
|
|
||
|
|
if (select >= syntax_count) {
|
||
|
|
* length = 1;
|
||
|
|
return (select);
|
||
|
|
}
|
||
|
|
|
||
|
|
for (offset = 1; string [offset - 1] != '\0'; ++offset) {
|
||
|
|
if (string [offset] == syntax_escape [select]) {
|
||
|
|
++offset;
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (syntax_derange [select] == 0) {
|
||
|
|
if (strncmp (& string [offset], syntax_end [select], strlen (syntax_end [select])) == 0) {
|
||
|
|
* length = offset + strlen (syntax_end [select]);
|
||
|
|
goto finished;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
subset = 0;
|
||
|
|
if (strcmp (syntax_end [select], "") == 0) {
|
||
|
|
break;
|
||
|
|
} do {
|
||
|
|
if (string [offset] == syntax_end [select] [subset]) {
|
||
|
|
* length = offset;
|
||
|
|
goto finished;
|
||
|
|
}
|
||
|
|
} while (++subset != strlen (syntax_end [select]));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
finished:
|
||
|
|
|
||
|
|
return (select);
|
||
|
|
}
|
||
|
|
|
||
|
|
void syntax_c (void) {
|
||
|
|
char * separators = ".,:;<=>+-*/%!&~^?|()[]{}'\" \t\r\n";
|
||
|
|
|
||
|
|
char * keywords [] = {
|
||
|
|
"register", "volatile", "auto", "const", "static", "extern", "if", "else",
|
||
|
|
"do", "while", "for", "continue", "switch", "case", "default", "break",
|
||
|
|
"enum", "union", "struct", "typedef", "goto", "void", "return", "sizeof",
|
||
|
|
"char", "short", "int", "long", "signed", "unsigned", "float", "double"
|
||
|
|
};
|
||
|
|
|
||
|
|
size_t word;
|
||
|
|
|
||
|
|
syntax_rule (0, 0, "/*", "*/", '\0', COLOUR_GREY, EFFECT_BOLD);
|
||
|
|
syntax_rule (0, 0, "//", "\n", '\0', COLOUR_GREY, EFFECT_BOLD);
|
||
|
|
syntax_rule (0, 0, "#", "\n", '\\', COLOUR_YELLOW, EFFECT_ITALIC);
|
||
|
|
syntax_rule (0, 0, "'", "'", '\\', COLOUR_PINK, EFFECT_BOLD);
|
||
|
|
syntax_rule (0, 0, "\"", "\"", '\\', COLOUR_PINK, EFFECT_NORMAL);
|
||
|
|
|
||
|
|
for (word = 0; word != sizeof (keywords) / sizeof (keywords [0]); ++word) {
|
||
|
|
syntax_rule (0, 1, keywords [word], separators, '\0', COLOUR_YELLOW, EFFECT_BOLD);
|
||
|
|
}
|
||
|
|
|
||
|
|
syntax_rule (1, 0, "()[]{}", "", '\0', COLOUR_BLUE, EFFECT_NORMAL);
|
||
|
|
syntax_rule (1, 0, ".,:;<=>+*-/%!&~^?|", "", '\0', COLOUR_CYAN, EFFECT_NORMAL);
|
||
|
|
|
||
|
|
syntax_rule (1, 1, "0123456789", separators, '\0', COLOUR_PINK, EFFECT_BOLD);
|
||
|
|
syntax_rule (1, 1, "abcdefghijklmnopqrstuvwxyz", separators, '\0', COLOUR_WHITE, EFFECT_NORMAL);
|
||
|
|
syntax_rule (1, 1, "ABCDEFGHIJKLMNOPQRSTUVWXYZ", separators, '\0', COLOUR_WHITE, EFFECT_BOLD);
|
||
|
|
syntax_rule (1, 1, "_", separators, '\0', COLOUR_WHITE, EFFECT_ITALIC);
|
||
|
|
}
|
||
|
|
|
||
|
|
void syntax_ada (void) {
|
||
|
|
char * separators = ".,:;<=>+-*/&|()\" \t\r\n";
|
||
|
|
|
||
|
|
char * keywords [] = {
|
||
|
|
"abort", "else", "new", "return", "abs", "elsif", "not", "reverse",
|
||
|
|
"abstract", "end", "null", "accept", "entry", "select", "access", "of",
|
||
|
|
"separate", "aliased", "exit", "or", "some", "all", "others", "subtype",
|
||
|
|
"and", "for", "out", "array", "function", "at", "tagged", "generic",
|
||
|
|
"package", "task", "begin", "goto", "pragma", "body", "private", "then",
|
||
|
|
"type", "case", "in", "constant", "until", "is", "raise", "use",
|
||
|
|
"if", "declare", "range", "delay", "limited", "record", "when", "delta",
|
||
|
|
"loop", "rem", "while", "digits", "renames", "with", "do", "mod",
|
||
|
|
"requeue", "xor", "procedure", "protected", "interface", "synchronized", "exception", "overriding",
|
||
|
|
"terminate"
|
||
|
|
};
|
||
|
|
|
||
|
|
size_t word;
|
||
|
|
|
||
|
|
syntax_rule (0, 0, "--", "\n", '\0', COLOUR_GREY, EFFECT_BOLD);
|
||
|
|
syntax_rule (0, 0, "'", "'", '\\', COLOUR_PINK, EFFECT_BOLD);
|
||
|
|
syntax_rule (0, 0, "\"", "\"", '\\', COLOUR_PINK, EFFECT_NORMAL);
|
||
|
|
|
||
|
|
for (word = 0; word != sizeof (keywords) / sizeof (keywords [0]); ++word) {
|
||
|
|
syntax_rule (0, 1, keywords [word], separators, '\0', COLOUR_YELLOW, EFFECT_BOLD);
|
||
|
|
}
|
||
|
|
|
||
|
|
syntax_rule (1, 0, "()", "", '\0', COLOUR_BLUE, EFFECT_NORMAL);
|
||
|
|
syntax_rule (1, 0, ".,:;<=>+-*/&|'", "", '\0', COLOUR_CYAN, EFFECT_NORMAL);
|
||
|
|
|
||
|
|
syntax_rule (1, 1, "0123456789", separators, '\0', COLOUR_PINK, EFFECT_BOLD);
|
||
|
|
syntax_rule (1, 1, "abcdefghijklmnopqrstuvwxyz", separators, '\0', COLOUR_WHITE, EFFECT_NORMAL);
|
||
|
|
syntax_rule (1, 1, "ABCDEFGHIJKLMNOPQRSTUVWXYZ", separators, '\0', COLOUR_WHITE, EFFECT_BOLD);
|
||
|
|
}
|
||
|
|
|
||
|
|
char * syntax_highlight (char * code) {
|
||
|
|
static char buffer [4096] = "";
|
||
|
|
static char string [4096] = "";
|
||
|
|
|
||
|
|
size_t select, length, offset;
|
||
|
|
|
||
|
|
memset (buffer, 0, sizeof (buffer));
|
||
|
|
memset (string, 0, sizeof (string));
|
||
|
|
|
||
|
|
strcpy (string, code);
|
||
|
|
|
||
|
|
for (offset = 0; offset < strlen (string); offset += length) {
|
||
|
|
select = syntax_loop (& string [offset], & length);
|
||
|
|
|
||
|
|
if (select >= syntax_count) {
|
||
|
|
strncat (buffer, "\033[1;31m", 7);
|
||
|
|
} else {
|
||
|
|
char colour [8] = "\033[-;3-m";
|
||
|
|
colour [2] = syntax_effect [select];
|
||
|
|
colour [5] = syntax_colour [select];
|
||
|
|
strncat (buffer, colour, 7);
|
||
|
|
}
|
||
|
|
|
||
|
|
strncat (buffer, & string [offset], (size_t) length);
|
||
|
|
|
||
|
|
strncat (buffer, "\033[0m", 4);
|
||
|
|
}
|
||
|
|
|
||
|
|
return (buffer);
|
||
|
|
}
|