diff options
Diffstat (limited to 'src/tape.c')
| -rw-r--r-- | src/tape.c | 101 |
1 files changed, 101 insertions, 0 deletions
@@ -1,6 +1,107 @@ +#pragma once + #include <stdio.h> #include <stdlib.h> #include <dirent.h> #include <string.h> #include <mkdirp.c> #include <fopenmkdir.c> +#include <limits.h> +#include <randstring.c> +#define BVR_MAX_VARIABLE_SIZE 128 +#define BVR_INITIAL_VARIABLES_COUNT 128 +#define SUCCESS 0 +#define FAILURE -1 +#define COPY_BUFFER_SIZE 2 +#define OPENING_COMMAND_TAG_LENGTH 2 +#define OPENING_COMMAND_TAG_CHAR_1 '<' +#define OPENING_COMMAND_TAG_CHAR_2 '@' +#define CLOSING_COMMAND_TAG_CHAR_1 '@' +#define CLOSING_COMMAND_TAG_CHAR_2 '>' +char bvr_variables[BVR_INITIAL_VARIABLES_COUNT][BVR_MAX_VARIABLE_SIZE]; +// char* bvr_variables[128] = malloc(BVR_INITIAL_VARIABLES_COUNT * BVR_MAX_VARIABLE_SIZE); +int bvr_variables_multiplier = 1; + +// int bvr_increase_variables() { // this can be costly https://stackoverflow.com/a/3827922 +// char* more_variables = realloc(bvr_variables, ++bvr_variables_multiplier * BVR_INITIAL_VARIABLES_COUNT * sizeof(BVR_MAX_VARIABLE_SIZE)); +// if (!more_variables) { +// printf("[tape.c] bvr_increase_variables: unable to increase variables count. Program will continue, but may run out of variable space and fail\n"); +// bvr_variables_multiplier = bvr_variables_multiplier - 1; +// return FAILURE; +// } +// return SUCCESS; +// } + + +int bvr_command_processor(FILE * page_source_file, FILE * temp_output_file, char copy_buffer[]) { + for(int i = 1; i <= OPENING_COMMAND_TAG_LENGTH; i++) { + copy_buffer[ftell(page_source_file)% COPY_BUFFER_SIZE] = fgetc(page_source_file); // remove opening command tag characters + } + while(copy_buffer[(ftell(page_source_file)-1)% COPY_BUFFER_SIZE] != CLOSING_COMMAND_TAG_CHAR_1 || copy_buffer[ftell(page_source_file)% COPY_BUFFER_SIZE] != CLOSING_COMMAND_TAG_CHAR_2) { + copy_buffer[(ftell(page_source_file))% COPY_BUFFER_SIZE] = fgetc(page_source_file); // advance file pointer to the end of command without rewriting. + fputc('a', temp_output_file); + if(copy_buffer[(ftell(page_source_file)-1)% COPY_BUFFER_SIZE] == EOF) { + fprintf(temp_output_file, "\nbVerbose syntax error: EOF reached before closing command tag --- stopped with this bvr file\n"); + fprintf(stderr, "[tape.c] bvr_command_processor: syntax error: EOF reached before @> --- stopped with this bvr file\n"); + return FAILURE; + } + } + copy_buffer[ftell(page_source_file)% COPY_BUFFER_SIZE] = fgetc(page_source_file); // remove closing command tag character + return SUCCESS; +} + +int bvr_compose_page(char page_source_file_path[], int this_is_a_top_level_page, char * temp_output_path) { + if(temp_output_path != NULL) { + char * temp_output_filename = randstring(16); + char temp_output_path[80] = "tmp/"; + strcat(temp_output_path, temp_output_filename); + } + char copy_buffer[COPY_BUFFER_SIZE]; + FILE * temp_output_file = fopen_mkdir(temp_output_path, "w"); + FILE * page_source_file = fopen(page_source_file_path, "r"); + + for(int i = 0; i < sizeof(copy_buffer); i++) { // da garbage vrednosti ne bodo slučajno ukazi! + copy_buffer[i] = ' '; + } + copy_buffer[ftell(page_source_file)% COPY_BUFFER_SIZE] = fgetc(page_source_file); + if(copy_buffer[ftell(page_source_file)% COPY_BUFFER_SIZE] == EOF) { + goto done_reading_write_file; + } + while (1) { + copy_buffer[ftell(page_source_file)% COPY_BUFFER_SIZE] = fgetc(page_source_file); + if(copy_buffer[(ftell(page_source_file)-1)% COPY_BUFFER_SIZE] == OPENING_COMMAND_TAG_CHAR_1 && copy_buffer[ftell(page_source_file)% COPY_BUFFER_SIZE] == OPENING_COMMAND_TAG_CHAR_2) { + if(bvr_command_processor(page_source_file, temp_output_file, copy_buffer)) { + fprintf(temp_output_file, "\nbvr_command_processor returned an error status whilst composing %s\n", page_source_file_path); + } + } else { + if(copy_buffer[ftell(page_source_file)% COPY_BUFFER_SIZE] == EOF) { + break; + } + fputc(copy_buffer[(ftell(page_source_file)-1)% COPY_BUFFER_SIZE], temp_output_file); + } + } + + + done_reading_write_file: + if(this_is_a_top_level_page) { + char folder_of_file[PATH_MAX]; + strcpy(folder_of_file, page_source_file_path); + char * p; + p = strrchr(folder_of_file, '/'); + if (!p) { + printf("[fopenmkdir.c] filename contains no slash.\n"); + return FAILURE; + } else { + *p = '\0'; + } + char *type_of_page = strrchr(folder_of_file, '/'); + if (type_of_page == NULL) { + printf("[tape.c] bvr_compose_page: folder of file contains no slash, hope %s is a page category.", folder_of_file); + type_of_page = folder_of_file; + } else { + type_of_page++; + } + // type_of_page+1 is a page category (skip delimeter pointer.) + } + return SUCCESS; +} |