Improved CLI

src/main.c

@@ -7,6 +7,10 @@
 #define ALLOCATION_CHUNK (1024UL)
 #define ALLOCATION_LIMIT (1024UL * 1024UL)
 
+#ifndef PROGN
+# define PROGN "hl"
+#endif
+
 enum { NORMAL,     BOLD,       DARKNESS,   ITALIC,     UNDERLINE,  BLINK,      DUNNO_6,    REVERSE,    INVISIBLE    };
 enum { GREY,       RED,        GREEN,      YELLOW,     BLUE,       PINK,       CYAN,       WHITE,      CANCEL       };
 
@@ -30,281 +34,356 @@ static int effect_keyword       = BOLD;
 static int effect_preprocessor  = BOLD;
 static int effect_default       = BOLD;
 
-static char * buffer = NULL;
-
 static unsigned long int buffer_size = 0;
 
 static void render_character (
-	char character
+  char character
 ) {
-	putchar (character);
+  putchar (character);
 }
 
 static void render_string (
-	char * string
+  char * string
 ) {
-	while (* string) render_character (* string++);
+  while (* string) render_character (* string++);
 }
 
 static void render_colour (
-	int colour,
-	int effect
+  int colour,
+  int effect
 ) {
-	if (colour == CANCEL) {
-		render_string ("\033[0m");
-		return;
-	}
-
-	render_string    ("\033[");
-	render_character ((char) (effect % 9) + '0');
-	render_string    (";3");
-	render_character ((char) (colour % 8) + '0');
-	render_character ('m');
+  if (colour == CANCEL) {
+    render_string ("\033[0m");
+    return;
+  }
+
+  render_string    ("\033[");
+  render_character ((char) (effect % 9) + '0');
+  render_string    (";3");
+  render_character ((char) (colour % 8) + '0');
+  render_character ('m');
 }
 
 static int is_space (
-	char character
+  char character
 ) {
-	if ((character ==  ' ') || (character == '\t') || (character == '\r') || (character == '\n')) {
-		return (1);
-	} else {
-		return (0);
-	}
+  switch (character)
+  {
+    case ' ': case '\t': case '\r': case '\n':
+      return (1);
+    default:
+      return (0);
+  }
 }
 
 static int is_separator (
-	char character
+  char character
 ) {
-	if ((character ==  ' ') || (character == '\t') || (character == '\r') || (character == '\n') ||
-	    (character ==  '+') || (character ==  '-') || (character ==  '*') || (character ==  '/') ||
-	    (character ==  '(') || (character ==  ')') || (character ==  '[') || (character ==  ']') ||
-	    (character ==  '{') || (character ==  '}') || (character ==  '<') || (character ==  '>') ||
-	    (character ==  ';') || (character ==  ':') || (character ==  ',') || (character ==  '.') ||
-	    (character ==  '!') || (character ==  '&') || (character ==  '|') || (character ==  '?') ||
-	    (character ==  '~') || (character ==  '^') || (character ==  '%') || (character ==  '=')) {
-		return (1);
-	} else {
-		return (0);
-	}
+  switch (character)
+  {
+    case ' ': case '\t': case '\r': case '\n':
+    case '+': case '-': case '*': case '/':
+    case '(': case ')': case '[': case ']':
+    case '{': case '}': case '<': case '>':
+    case ';': case ':': case ',': case '.':
+    case '!': case '&': case '|': case '?':
+    case '~': case '^': case '%': case '=':
+      return (1);
+    default:
+      return (0);
+  }
 }
 
 static int compare_multiple_strings (
-	      char   * string,
-	const char * * strings,
-	const int      count
+        char  * string,
+  const char ** strings,
+  const int     count
 ) {
-	int i = 0;
+  int i = 0;
 
-	do {
-		if (strcmp (string, strings [i]) == 0) {
-			return (1);
-		}
-		++i;
-	} while (i != count);
+  do {
+    if (strcmp (string, strings [i]) == 0) {
+      return (1);
+    }
+    ++i;
+  } while (i != count);
 
-	return (0);
+  return (0);
 }
 
 static int render_short_comment (
-	int data_offset
+  char * buffer,
+  int    data_offset
 ) {
-	render_colour (colour_short_comment, effect_short_comment);
+  render_colour (colour_short_comment, effect_short_comment);
 
-	do {
-		render_character (buffer [data_offset]);
-		++data_offset;
-	} while ((buffer [data_offset] != '\n') && (buffer [data_offset] != '\0'));
+  do {
+    render_character (buffer [data_offset]);
+    ++data_offset;
+  } while ((buffer [data_offset] != '\n') && (buffer [data_offset] != '\0'));
 
-	render_character (buffer [data_offset]);
-	++data_offset;
+  render_character (buffer [data_offset]);
+  ++data_offset;
 
-	return (data_offset);
+  return (data_offset);
 }
 
 static int render_long_comment (
-	int data_offset
+  char * buffer,
+  int    data_offset
 ) {
-	render_colour (colour_long_comment, effect_long_comment);
+  render_colour (colour_long_comment, effect_long_comment);
 
-	do {
-		render_character (buffer [data_offset]);
-		++data_offset;
-	} while (((buffer [data_offset]     != '/') ||
-	         (buffer [data_offset - 1] != '*')) &&
-	         (buffer [data_offset]     != '\0'));
+  do {
+    render_character (buffer [data_offset]);
+    ++data_offset;
+  } while (((buffer [data_offset]     != '/')  ||
+            (buffer [data_offset - 1] != '*')) &&
+            (buffer [data_offset]     != '\0'));
 
-	render_character (buffer [data_offset]);
-	++data_offset;
+  render_character (buffer [data_offset]);
+  ++data_offset;
 
-	return (data_offset);
+  return (data_offset);
 }
 
 static int render_short_string (
-	int data_offset
+  char * buffer,
+  int    data_offset
 ) {
-	render_colour (colour_short_string, effect_short_string);
+  render_colour (colour_short_string, effect_short_string);
 
-	do {
-		render_character (buffer [data_offset]);
-		++data_offset;
-		if (buffer [data_offset - 1] == '\\') {
-			render_character (buffer [data_offset]);
-			++data_offset;
-		}
-	} while ((buffer [data_offset] != '\'') && (buffer [data_offset] != '\0'));
+  do {
+    render_character (buffer [data_offset]);
+    ++data_offset;
+    if (buffer [data_offset - 1] == '\\') {
+      render_character (buffer [data_offset]);
+      ++data_offset;
+    }
+  } while ((buffer [data_offset] != '\'') && (buffer [data_offset] != '\0'));
 
-	render_character (buffer [data_offset]);
-	++data_offset;
+  render_character (buffer [data_offset]);
+  ++data_offset;
 
-	return (data_offset);
+  return (data_offset);
 }
 
 static int render_long_string (
-	int data_offset
+  char * buffer,
+  int    data_offset
 ) {
-	render_colour (colour_long_string, effect_long_string);
+  render_colour (colour_long_string, effect_long_string);
 
-	do {
-		render_character (buffer [data_offset]);
-		++data_offset;
-		if (buffer [data_offset - 1] == '\\') {
-			render_character (buffer [data_offset]);
-			++data_offset;
-		}
-	} while ((buffer [data_offset] != '"') && (buffer [data_offset] != '\0'));
+  do {
+    render_character (buffer [data_offset]);
+    ++data_offset;
+    if (buffer [data_offset - 1] == '\\') {
+      render_character (buffer [data_offset]);
+      ++data_offset;
+    }
+  } while ((buffer [data_offset] != '"') && (buffer [data_offset] != '\0'));
 
-	render_character (buffer [data_offset]);
-	++data_offset;
+  render_character (buffer [data_offset]);
+  ++data_offset;
 
-	return (data_offset);
+  return (data_offset);
 }
 
 static int render_separator (
-	int data_offset
+  char * buffer,
+  int    data_offset
 ) {
-	if (is_space (buffer [data_offset]) != 0) {
-		render_colour (WHITE, NORMAL);
-	} else {
-		render_colour (colour_separator, effect_separator);
-	}
+  if (is_space (buffer [data_offset]) != 0) {
+    render_colour (WHITE, NORMAL);
+  } else {
+    render_colour (colour_separator, effect_separator);
+  }
 
-	render_character (buffer [data_offset]);
-	++data_offset;
+  render_character (buffer [data_offset]);
+  ++data_offset;
 
-	return (data_offset);
+  return (data_offset);
 }
 
 static int render_number (
-	int data_offset
+  char * buffer,
+  int    data_offset
 ) {
-	render_colour (colour_number, effect_number);
+  render_colour (colour_number, effect_number);
 
-	do {
-		render_character (buffer [data_offset]);
-		++data_offset;
-	} while ((is_separator (buffer [data_offset]) == 0) && (buffer [data_offset] != '\0'));
+  do {
+    render_character (buffer [data_offset]);
+    ++data_offset;
+  } while ((is_separator (buffer [data_offset]) == 0) && (buffer [data_offset] != '\0'));
 
-	return (data_offset);
+  return (data_offset);
 }
 
 static int render_word (
-	int data_offset
+  char * buffer,
+  int data_offset
+) {
+  const char * c_keywords [32] = {
+    "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"
+  };
+
+  const char * preprocessor_keywords [16] = {
+    "#include",     "#pragma",      "#define",      "#undef",       "#ifdef",       "#ifndef",      "#elifdef",     "#elifndef",
+    "#if",          "#elif",        "#else",        "#endif",       "#embed",       "#line",        "#error",       "#warning"
+  };
+
+  char * word = NULL;
+
+  int i = 0;
+
+  do {
+    word = realloc (word, sizeof (* word) * (unsigned long int) (i + 1));
+    word [i] = buffer [data_offset + i];
+    ++i;
+  } while ((is_separator (buffer [data_offset + i]) == 0) && (buffer [data_offset + i] != '\0'));
+
+  word = realloc (word, sizeof (* word) * (unsigned long int) (i + 1));
+  word [i] = '\0';
+
+  if (compare_multiple_strings (word, c_keywords, 32) != 0) {
+    render_colour (colour_keyword, effect_keyword);
+  } else if (compare_multiple_strings (word, preprocessor_keywords, 16) != 0) {
+    render_colour (colour_preprocessor, effect_preprocessor);
+  } else {
+    render_colour (colour_default, effect_default);
+  }
+
+  do {
+    render_character (buffer [data_offset]);
+    ++data_offset;
+  } while ((is_separator (buffer [data_offset]) == 0) && (buffer [data_offset] != '\0'));
+
+  free (word);
+
+  return (data_offset);
+}
+
+void
+handle_buffer(
+  char * buffer
 ) {
-	const char * c_keywords [32] = {
-		"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"
-	};
-
-	const char * preprocessor_keywords [16] = {
-		"#include",     "#pragma",      "#define",      "#undef",       "#ifdef",       "#ifndef",      "#elifdef",     "#elifndef",
-		"#if",          "#elif",        "#else",        "#endif",       "#embed",       "#line",        "#error",       "#warning"
-	};
-
-	char * word = NULL;
-
-	int i = 0;
-
-	do {
-		word = realloc (word, sizeof (* word) * (unsigned long int) (i + 1));
-		word [i] = buffer [data_offset + i];
-		++i;
-	} while ((is_separator (buffer [data_offset + i]) == 0) && (buffer [data_offset + i] != '\0'));
-
-	word = realloc (word, sizeof (* word) * (unsigned long int) (i + 1));
-	word [i] = '\0';
-
-	if (compare_multiple_strings (word, c_keywords, 32) != 0) {
-		render_colour (colour_keyword, effect_keyword);
-	} else if (compare_multiple_strings (word, preprocessor_keywords, 16) != 0) {
-		render_colour (colour_preprocessor, effect_preprocessor);
-	} else {
-		render_colour (colour_default, effect_default);
-	}
-
-	do {
-		render_character (buffer [data_offset]);
-		++data_offset;
-	} while ((is_separator (buffer [data_offset]) == 0) && (buffer [data_offset] != '\0'));
-
-	free (word);
-
-	return (data_offset);
+  int offset = 0;
+  while (buffer [offset] != '\0') {
+    if ((buffer [offset] == '/') && (buffer [offset + 1] == '/')) {
+      offset = render_short_comment (buffer, offset);
+    } else if ((buffer [offset] == '/') && (buffer [offset + 1] == '*')) {
+      offset = render_long_comment (buffer, offset);
+    } else if (buffer [offset] == '\'') {
+      offset = render_short_string (buffer, offset);
+    } else if (buffer [offset] == '"') {
+      offset = render_long_string (buffer, offset);
+    } else if (is_separator (buffer [offset]) != 0) {
+      offset = render_separator (buffer, offset);
+    } else if ((buffer [offset] >= '0') && (buffer [offset] <= '9')) {
+      offset = render_number (buffer, offset);
+    } else {
+      offset = render_word (buffer, offset);
+    }
+    render_colour (CANCEL, NORMAL);
+  }
 }
+
+static char *
+slurp(const char * fn)
+{
+  size_t len;
+  char * b;
+  FILE * fp = fopen(fn, "r");
+  if (fp)
+  {
+    fseek(fp, 0, SEEK_END);
+    len = ftell(fp);
+    rewind(fp);
+    b = malloc(len);
+    if (b &&
+        len != fread(b, 1, len, fp))
+    { perror(PROGN); }
+    fclose(fp);
+    return b;
+  }
+  else
+  { return NULL; }
+}
+
+#define OPT(c,s)                                  \
+  if ((c == argv[0][0] && argv[0][1] == '\0') ||  \
+      0 == strncmp(argv[0], s, strlen(s)))
+
+#define SOPT(s)                                   \
+  if (0 == strncmp(argv[0], s, strlen(s)))
+
 /*
 Valgrind: Depends on uninitialized value (buffer [0])...?
 280 : } while ((buffer [buffer_size - 1] != '\0') || (buffer_size != ALLOCATION_LIMIT));
 285 : while (buffer [offset] != '\0') {
 */
 int main (
-	int      argc,
-	char * * argv
+  int     argc,
+  char ** argv
 ) {
-	int offset = 0;
-
-	if (argc != 1) {
-		(void) argv;
-		puts ("ARGUMENTS \"Heyo world!\"");
-		return (-1);
-	}
-
-	buffer = realloc (buffer, ALLOCATION_CHUNK);
-
-	do {
-		if ((buffer_size + 1) % ALLOCATION_CHUNK == 0) {
-			buffer = realloc (buffer, ((buffer_size + 1) / ALLOCATION_CHUNK + 1) * ALLOCATION_CHUNK);
-		}
-		buffer [buffer_size] = '\0'; /* Fixing Valgrind warnings... */
-		read (STDIN_FILENO, & buffer [buffer_size], sizeof (* buffer));
-		++buffer_size;
-	} while ((buffer [buffer_size - 1] != '\0') /*|| (buffer_size != ALLOCATION_LIMIT)*/);
-
-	buffer [buffer_size - 1] = '\0';
-
-	/* Checking if long comments work... */
-	// Checking if short comments work...
-
-	while (buffer [offset] != '\0') {
-		if ((buffer [offset] == '/') && (buffer [offset + 1] == '/')) {
-			offset = render_short_comment (offset);
-		} else if ((buffer [offset] == '/') && (buffer [offset + 1] == '*')) {
-			offset = render_long_comment (offset);
-		} else if (buffer [offset] == '\'') {
-			offset = render_short_string (offset);
-		} else if (buffer [offset] == '"') {
-			offset = render_long_string (offset);
-		} else if (is_separator (buffer [offset]) != 0) {
-			offset = render_separator (offset);
-		} else if ((buffer [offset] >= '0') && (buffer [offset] <= '9')) {
-			offset = render_number (offset);
-		} else {
-			offset = render_word (offset);
-		}
-		render_colour (CANCEL, NORMAL);
-	}
-
-	free (buffer);
-
-	return (0);
+  char * buffer = NULL;
+
+  if (argc != 1) {
+    (void) argv;
+    while (++argv, --argc) {
+      if (argv[0][0] == '-') {
+        argv[0]++;
+        OPT ('?',"help") {
+          fprintf (stderr, PROGN ": ... | hl [OPTIONS] FILES ...\n");
+          return (0);
+        }
+        SOPT ("version") {
+          fprintf(stderr, PROGN ": Version 9000\n");
+          return (0);
+        }
+        else {
+          fprintf (stderr, PROGN ": Unrecognized option '%s'\n", argv [0]);
+          return (1);
+        }
+      } else {
+        if ((buffer = slurp (argv [0]))) {
+          handle_buffer (buffer);
+          free (buffer);
+        }
+      }
+    }
+  }
+
+  buffer = realloc (buffer, ALLOCATION_CHUNK);
+
+#define MEMFAIL(v) if (v == NULL) { perror(PROGN); return (1); }
+  MEMFAIL(buffer);
+
+  do {
+    if ((buffer_size + 1) % ALLOCATION_CHUNK == 0) {
+      buffer = realloc (buffer,
+                        ((buffer_size + 1)
+                         / ALLOCATION_CHUNK + 1)
+                         * ALLOCATION_CHUNK);
+        MEMFAIL(buffer);
+    }
+    buffer [buffer_size] = '\0'; /* Fixing Valgrind warnings... */
+    read (STDIN_FILENO, & buffer [buffer_size], sizeof (* buffer));
+    ++buffer_size;
+  } while ((buffer [buffer_size - 1] != '\0') /*||
+           (buffer_size != ALLOCATION_LIMIT)*/);
+
+  buffer [buffer_size - 1] = '\0';
+
+  // Checking if short comments work...
+  /* Checking if long comments work... */
+
+  handle_buffer(buffer);
+
+  free (buffer);
+
+  return (0);
 }

tests/extra.c

@@ -0,0 +1,4 @@
+int
+main(void)
+
+{nothing.}

tests/main.c

@@ -319,3 +319,4 @@ signed main(){
 
 	return 0;
 }
+