float, constants, ets

1 files changed, 0 insertions, 579 deletions

diff --git a/smack.c b/smack.c
deleted file mode 100644
index f6f9f30..0000000
--- a/smack.c
+++ /dev/null
@@ -1,579 +0,0 @@
-/*
-	Simple Macro Generator
-	created by exegete
-*/
-
-#include <unistd.h>
-#include <stdio.h>
-#include <stdlib.h>
-
-struct macro
-{
-	const char *lexem;
-	unsigned long long param_count;
-	const char *text;
-	struct macro *next;
-};
-
-struct macro_parameter
-{
-	char *lexem;
-	struct macro_parameter *next;
-};
-
-struct input_stream
-{
-	FILE *fd;
-	const struct macro *macro;
-	unsigned long long text_offset;
-	struct macro_parameter *param_list;
-	struct input_stream *next;
-};
-
-struct module
-{
-	const char *file_name;
-	struct module *next;
-};
-
-#define ERROR_STATUS_ARG 1
-#define ERROR_STATUS_OPEN 2
-#define ERROR_STATUS_CHDIR 3
-#define ERROR_STATUS_MALLOC 4
-#define ERROR_STATUS_EMPTY_STREAM_LIST 5
-#define ERROR_STATUS_INVALID_STREAM 6
-#define ERROR_STATUS_INVALID_MACRO 7
-#define ERROR_STATUS_INVALID_PARAMETER 8
-#define ERROR_STATUS_INVALID_CALL 9
-#define ERROR_STATUS_INVALID_INCLUDE 10
-#define ERROR_STATUS_INVALID_SHIELD 11
-
-const char *error_msgs[] =
-{
-	"Please, specify input file",
-	"Unable to open file: ",
-	"Unable to change working directory: ",
-	"Unable to allocate memory",
-	"Input stream list is empty",
-	"Input stream is invalid",
-	"Macro definition is invalid",
-	"Macro parameter is invalid",
-	"Macro call is invalid",
-	"Invalid include/module argument",
-	"Invalid '#' argument"
-};
-
-void exit_error(int status, const char *msg)
-{
-	if(msg)
-		fprintf(stderr, "Error: %s%s\n", error_msgs[status - 1], msg);
-	else
-		fprintf(stderr, "Error: %s\n", error_msgs[status - 1]);
-	exit(status);
-}
-
-void add_input_stream(struct input_stream **stream_list,
-	FILE *fd, const struct macro *macro)
-{
-	struct input_stream *head = *stream_list;
-	*stream_list = malloc(sizeof(struct input_stream));
-	if(!*stream_list)
-		exit_error(ERROR_STATUS_MALLOC, NULL);
-	(*stream_list)->fd = fd;
-	(*stream_list)->macro = macro;
-	(*stream_list)->text_offset = 0;
-	(*stream_list)->param_list = NULL;
-	(*stream_list)->next = head;
-}
-
-int delete_input_stream(struct input_stream **stream_list)
-{
-	struct input_stream *head = *stream_list;
-	if(!head)
-		exit_error(ERROR_STATUS_EMPTY_STREAM_LIST, NULL);
-	*stream_list = (*stream_list)->next;
-	if(head->fd)
-		fclose(head->fd);
-	while(head->param_list)
-	{
-		struct macro_parameter *param_head = head->param_list;
-		head->param_list = param_head->next;
-		free(param_head->lexem);
-		free(param_head);
-	}
-	free(head);
-	return *stream_list != NULL;
-}
-
-void add_input_stream_parameter(struct input_stream *stream_list, char *lexem)
-{
-	struct macro_parameter **param = &stream_list->param_list;
-	while(*param)
-		param = &(*param)->next;
-	*param = malloc(sizeof(struct macro_parameter));
-	if(!*param)
-		exit_error(ERROR_STATUS_MALLOC, NULL);
-	(*param)->lexem = lexem;
-	(*param)->next = NULL;
-}
-
-const char *get_input_stream_parameter(struct input_stream *stream_list,
-	unsigned long long chosen)
-{
-	struct macro_parameter *param = stream_list->param_list;
-	if(!chosen)
-		return stream_list->macro->lexem;
-	chosen--;
-	for(; param && chosen > 0; chosen--)
-		param = param->next;
-	if(!param)
-		exit_error(ERROR_STATUS_INVALID_CALL, NULL);
-	return param->lexem;
-}
-
-#define BUFFER_INITIAL_SIZE 4
-
-int double_buffer(char **buffer, unsigned long long *buffer_size)
-{
-	char *tmp_pointer = *buffer;
-	unsigned long long tmp_size = *buffer_size;
-
-	if(*buffer_size == 0)
-		*buffer_size = BUFFER_INITIAL_SIZE;
-	else
-		*buffer_size *= 2;
-
-	*buffer = malloc(*buffer_size);
-	if(!*buffer)
-		return 0;
-
-	for(; tmp_size > 0; tmp_size--)
-		(*buffer)[tmp_size - 1] = tmp_pointer[tmp_size - 1];
-
-	free(tmp_pointer);
-	return 1;
-}
-
-int read_symb_from_text(struct input_stream *stream_list)
-{
-	char symb;
-	if(!stream_list->macro)
-		exit_error(ERROR_STATUS_INVALID_STREAM, NULL);
-	if(!stream_list->macro->text)
-		exit_error(ERROR_STATUS_INVALID_STREAM, NULL);
-	symb = stream_list->macro->text[stream_list->text_offset];
-	if(!symb)
-		return EOF;
-	stream_list->text_offset++;
-	return symb;
-}
-
-#define COMMENT_SYMB ';'
-
-int read_real_symb(struct input_stream *stream_list)
-{
-	int symb;
-
-	if(!stream_list)
-		exit_error(ERROR_STATUS_EMPTY_STREAM_LIST, NULL);
-
-	if(stream_list->fd)
-		symb = fgetc(stream_list->fd);
-	else
-		symb = read_symb_from_text(stream_list);
-
-	if(symb == COMMENT_SYMB)
-	{
-		for(; symb != '\n' && symb != EOF;
-			symb = fgetc(stream_list->fd))
-		{}
-	}
-	return symb;
-}
-
-#define SHIELD_SYMB '\\'
-
-int read_symb(struct input_stream *stream_list, int *shield)
-{
-	int symb = read_real_symb(stream_list);
-	if(shield)
-	{
-		*shield = 0;
-		if(symb == SHIELD_SYMB)
-		{
-			symb = read_real_symb(stream_list);
-			*shield = 1;
-		}
-	}
-	return symb;
-}
-
-int is_symb_hex(char symb)
-{
-	if(symb >= '0' && symb <= '9')
-		return symb - '0';
-	else
-	if(symb >= 'A' && symb <= 'F')
-		return symb - 'A' + 10;
-	else
-	if(symb >= 'a' && symb <= 'f')
-		return symb - 'a' + 10;
-	else
-		return -1;
-}
-
-int is_lexem_hex(const char *lexem, unsigned long long *dest)
-{
-	int sign = 0;
-	unsigned long long hex = 0;
-	if(*lexem == '-' && *(lexem + 1))
-	{
-		sign = 1;
-		lexem++;
-	}
-
-	for(; *lexem; lexem++)
-	{
-		int num = is_symb_hex(*lexem);
-		if(num != -1)
-			hex = (hex << 4) + num;
-		else
-			return 0;
-	}
-	hex = sign ? ~hex + 1 : hex;
-	if(dest)
-		*dest = hex;
-	return 1;
-}
-
-int compare_lexems(const char *lexem_one, const char *lexem_two)
-{
-	for(; *lexem_one && *lexem_two; lexem_one++, lexem_two++)
-		if(*lexem_one != *lexem_two)
-			return 0;
-	return *lexem_one == *lexem_two;
-}
-
-char *copy_lexem(const char *lexem)
-{
-	char *buffer = NULL;
-	unsigned long long buffer_size = 0;
-	unsigned long long index;
-
-	for(index = 0;; index++)
-	{
-		if(index == buffer_size)
-			if(!double_buffer(&buffer, &buffer_size))
-				exit_error(ERROR_STATUS_MALLOC, NULL);
-		buffer[index] = lexem[index];
-		if(!lexem[index])
-			break;
-	}
-	return buffer;
-}
-
-#define EVAL_SYMB '%'
-
-unsigned long long get_eval_end(const char *lexem)
-{
-	unsigned long long counter = 0;
-
-	for(; *lexem && *lexem != EVAL_SYMB; lexem++, counter++)
-	{}
-	if(!*lexem)
-		exit_error(ERROR_STATUS_INVALID_CALL, NULL);
-	return counter;
-}
-
-char *param_eval(struct input_stream *stream_list, char *lexem)
-{
-	char *input_lexem = lexem;
-	char *buffer = NULL;
-	unsigned long long buffer_size = 0;
-	const char *param = NULL;
-	unsigned long long index = 0;
-
-	for(;;)
-	{
-		char symb = param && *param ? *param : *lexem++;
-		param = !param || !*param ? NULL : param + 1;
-		if(symb == EVAL_SYMB)
-		{
-			unsigned long long param_offset = get_eval_end(lexem);
-			unsigned long long param_num;
-			*(lexem + param_offset) = 0;
-			if(!is_lexem_hex(lexem, &param_num))
-				exit_error(ERROR_STATUS_INVALID_CALL, NULL);
-			lexem += param_offset + 1;
-			param = get_input_stream_parameter(stream_list,
-				param_num);
-			continue;
-		}
-		if(index == buffer_size)
-			if(!double_buffer(&buffer, &buffer_size))
-				exit_error(ERROR_STATUS_MALLOC, NULL);
-		buffer[index] = symb;
-		if(!symb)
-			break;
-		index++;
-	}
-	free(input_lexem);
-	return buffer;
-}
-
-int is_separator(int symb)
-{
-	return symb == ' ' || symb == '\n' || symb == '\t' || symb == '\r';
-}
-
-char *read_lexem(struct input_stream *stream_list)
-{
-	char *buffer = NULL;
-	unsigned long long buffer_size = 0;
-	int symb;
-	int shield;
-	unsigned long long index;
-
-	for(;;)
-	{
-		symb = read_symb(stream_list, &shield);
-		if(is_separator(symb) && !shield)
-			continue;
-		if(symb == EOF)
-			return NULL;
-		break;
-	}
-
-	for(index = 0;; index++)
-	{
-		if(index == buffer_size)
-			if(!double_buffer(&buffer, &buffer_size))
-				exit_error(ERROR_STATUS_MALLOC, NULL);
-		if(symb == EOF || (is_separator(symb) && !shield))
-		{
-			buffer[index] = 0;
-			break;
-		}
-		buffer[index] = symb;
-		symb = read_symb(stream_list, &shield);
-	}
-	buffer = param_eval(stream_list, buffer);
-	return buffer;
-}
-
-#define MACRO_END_SYMB ']'
-
-const char *read_macro_text(struct input_stream *stream_list)
-{
-	char *buffer = NULL;
-	unsigned long long buffer_size = 0;
-	unsigned long long index;
-
-	for(index = 0;; index++)
-	{
-		int shield;
-		int symb = read_symb(stream_list, &shield);
-		if(index == buffer_size)
-			if(!double_buffer(&buffer, &buffer_size))
-				exit_error(ERROR_STATUS_MALLOC, NULL);
-		if(symb == EOF || (symb == MACRO_END_SYMB && !shield))
-		{
-			buffer[index] = 0;
-			break;
-		}
-		buffer[index] = symb;
-	}
-	return buffer;
-}
-
-void create_macro(struct input_stream *stream_list, struct macro **macro_list)
-{
-	char *param_count_lexem;
-	struct macro *head = *macro_list;
-	*macro_list = malloc(sizeof(struct macro));
-	if(!*macro_list)
-		exit_error(ERROR_STATUS_MALLOC, NULL);
-	(*macro_list)->lexem = read_lexem(stream_list);
-	if(!(*macro_list)->lexem)
-		exit_error(ERROR_STATUS_INVALID_MACRO, NULL);	
-	param_count_lexem = read_lexem(stream_list);
-	if(!param_count_lexem || !is_lexem_hex(param_count_lexem,
-		&(*macro_list)->param_count))
-		exit_error(ERROR_STATUS_INVALID_MACRO, NULL);
-	free(param_count_lexem);
-	(*macro_list)->text = read_macro_text(stream_list);
-	(*macro_list)->next = head;
-}
-
-int find_module(struct module *module_list, const char *file_name)
-{
-	for(; module_list; module_list = module_list->next)
-		if(compare_lexems(module_list->file_name, file_name))
-			return 1;
-	return 0;
-}
-
-void add_module(struct module **module_list, const char *file_name)
-{
-	struct module *head = *module_list;
-	*module_list = malloc(sizeof(struct module));
-	if(!*module_list)
-		exit_error(ERROR_STATUS_MALLOC, NULL);
-	(*module_list)->file_name = file_name;
-	(*module_list)->next = head;
-}
-
-void include_file(struct input_stream **stream_list,
-	struct module **module_list)
-{
-	char *file_name = read_lexem(*stream_list);
-	FILE *fd;
-	if(!file_name)
-		exit_error(ERROR_STATUS_INVALID_INCLUDE, NULL);
-	if(module_list && find_module(*module_list, file_name))
-	{
-		free(file_name);
-		return;
-	}
-	fd = fopen(file_name, "r");
-	if(!fd)
-		exit_error(ERROR_STATUS_OPEN, file_name);
-	if(module_list)
-		add_module(module_list, file_name);
-	else
-		free(file_name);
-	add_input_stream(stream_list, fd, NULL);
-}
-
-void push_parameter(struct input_stream *input_stream,
-	struct input_stream *actual_stream)
-{
-	char *lexem = read_lexem(input_stream);
-	if(!lexem)
-		exit_error(ERROR_STATUS_INVALID_PARAMETER, NULL);
-	add_input_stream_parameter(actual_stream, lexem);
-}
-
-int find_macro(struct input_stream **stream_list, struct macro *macro_list,
-	const char *lexem)
-{
-	for(; macro_list; macro_list = macro_list->next)
-	{
-		if(compare_lexems(macro_list->lexem, lexem))
-		{
-			struct input_stream *old_stream = *stream_list;
-			unsigned long long param_count =
-				macro_list->param_count;
-			add_input_stream(stream_list, NULL, macro_list);
-			for(; param_count > 0; param_count--)
-				push_parameter(old_stream, *stream_list);
-			return 1;
-		}
-	}
-	return 0;
-}
-
-#define DIRECTORY_SEPARATOR_SYMB '/'
-
-unsigned long long find_last_dir_separator_pos(const char *file_name)
-{
-	const char *orig_file_name = file_name;
-	unsigned long long pos = 0;
-	for(; *file_name; file_name++)
-		if(*file_name == DIRECTORY_SEPARATOR_SYMB)
-			pos = file_name - orig_file_name;
-	return pos;
-}
-
-void initialize_stream(struct input_stream **stream_list,
-	const char *file_name)
-{
-	char *dir_path = copy_lexem(file_name);
-	unsigned long long dir_sep_pos = find_last_dir_separator_pos(dir_path);
-	FILE *fd = fopen(file_name, "r");
-	if(!fd)
-		exit_error(ERROR_STATUS_OPEN, file_name);
-	add_input_stream(stream_list, fd, NULL);
-	if(dir_sep_pos)
-	{
-		dir_path[dir_sep_pos] = 0;
-		if(chdir(dir_path) == -1)
-			exit_error(ERROR_STATUS_CHDIR, NULL);
-	}
-	free(dir_path);
-}
-
-void print_lexem(const char *lexem)
-{
-	printf("%s ", lexem);
-}
-
-#define MACRO_SHIELD_LEXEM "#"
-#define MACRO_START_LEXEM "["
-#define MACRO_INCLUDE_LEXEM "include"
-#define MACRO_MODULE_LEXEM "module"
-#define MACRO_LIT_LEXEM "literal"
-
-int main(int argc, char **argv)
-{
-	struct input_stream *stream_list = NULL;
-	struct macro *macro_list = NULL;
-	struct module *module_list = NULL;
-	char *lexem;
-
-	if(argc <= 1)
-		exit_error(ERROR_STATUS_ARG, NULL);
-	else
-		initialize_stream(&stream_list, argv[1]);
-
-	for(;; free(lexem))
-	{
-		lexem = read_lexem(stream_list);
-		if(!lexem)
-		{
-			if(delete_input_stream(&stream_list))
-				continue;
-			else
-				break;
-		}
-		if(compare_lexems(lexem, MACRO_SHIELD_LEXEM))
-		{
-			free(lexem);
-			lexem = read_lexem(stream_list);
-			if(!lexem)
-				exit_error(ERROR_STATUS_INVALID_SHIELD, NULL);
-			print_lexem(lexem);
-			continue;
-		}
-		if(compare_lexems(lexem, MACRO_START_LEXEM))
-		{
-			create_macro(stream_list, &macro_list);
-			continue;
-		}
-		if(compare_lexems(lexem, MACRO_INCLUDE_LEXEM))
-		{
-			include_file(&stream_list, NULL);
-			continue;
-		}
-		if(compare_lexems(lexem, MACRO_MODULE_LEXEM))
-		{
-			include_file(&stream_list, &module_list);
-			continue;
-		}
-		if(is_lexem_hex(lexem, NULL))
-		{
-			if(find_macro(&stream_list, macro_list,
-				MACRO_LIT_LEXEM))
-			{
-				add_input_stream_parameter(stream_list,
-					copy_lexem(lexem));
-				continue;
-			}
-		}
-		if(find_macro(&stream_list, macro_list, lexem))
-			continue;
-		print_lexem(lexem);
-	}
-
-	return 0;
-}