#include #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); }