cleanup of version 0.0
This commit is contained in:
parent
5378676596
commit
9784c97bf4
17
Makefile
17
Makefile
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@ -1,17 +0,0 @@
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OBJ:= html.o main.o
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OUTPUT:=nhtmlc
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all: debug
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debug: CXXFLAGS = -g -DDEBUG
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debug: CFLAGS = -g -DDEBUG
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debug: $(OBJ)
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gcc $(OBJ) -g -o $(OUTPUT)
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release: $(OBJ)
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gcc $(OBJ) -o $(OUTPUT)
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clean:
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rm -rf $(OBJ) $(OUTPUT)
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331
main.c
331
main.c
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@ -1,331 +0,0 @@
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#include <stdio.h> // needs: fgetc, fputs, fopen, fprintf
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#include <stdlib.h> // needs: realloc, malloc, free
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#include <string.h> // needs: strcmp, memcpy
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#include <errno.h>
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#include <ctype.h> // needs: isspace
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#include <getopt.h> // needs: getopt_long
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#include "html.h" // needs: html_escaped
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typedef struct {
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char * c_str;
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size_t len;
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} string_t;
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int string_append(string_t *str, char c) {
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if (str->c_str == NULL) {
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// new string, need to emit EOS
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str->len++;
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}
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char * new_ptr = realloc(str->c_str, str->len+1);
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if (new_ptr == NULL) {
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return -1;
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}
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// append char
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str->c_str = new_ptr;
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str->c_str[str->len-1] = c;
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str->c_str[str->len] = 0; // make sure
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str->len++;
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return 0;
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}
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void string_destroy(string_t s) {
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free(s.c_str);
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}
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string_t string_copy(string_t old) {
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string_t tmp;
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tmp.c_str = malloc(old.len);
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tmp.len = old.len;
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memcpy(tmp.c_str, old.c_str, tmp.len);
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return tmp;
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}
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typedef struct {
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string_t name, value;
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} attr_t;
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typedef struct {
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attr_t * arr;
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size_t len;
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} attr_set_t;
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// linear search in set
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// returns NULL on failure to find entry
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attr_t * attr_set_find(attr_set_t *set, const char * name) {
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size_t current = 0;
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for (; current != set->len; ++current) {
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if (strcmp(set->arr[current].name.c_str, name) == 0) {
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return set->arr + current;
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}
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}
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return NULL;
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}
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// Append new Attribute to set
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int attr_set_append(attr_set_t * set, attr_t *new_entry) {
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if (new_entry->name.c_str== NULL) return -1; // reject empty entries
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// search first
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attr_t * new_ptr = attr_set_find(set, new_entry->name.c_str);
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if (new_ptr != NULL) {
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// already contained in set
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// just change entries value
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string_destroy(new_ptr->value);
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new_ptr->value = string_copy(new_entry->value);
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return 0;
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}
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new_ptr = realloc(set->arr, (set->len+1)*sizeof(attr_t));
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if (new_ptr == NULL) {
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return -1;
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}
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// append and quit
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set->arr = new_ptr;
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set->arr[set->len] = *new_entry;
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set->len++;
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return 0;
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}
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void attr_reset(attr_t * attr) {
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memset(attr, 0, sizeof(attr_t));
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}
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int strip(FILE * stream) {
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int current = 0;
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while((current = fgetc(stream)) != EOF) {
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if (!isspace(current))
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break;
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}
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return current;
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}
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int parse_attr(FILE * stream, attr_set_t * output) {
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attr_t current_attr = {};
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#ifdef DEBUG
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printf("parse_attr\n");
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#endif
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int buffer = 0;
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unsigned char isKey = 1;
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while((buffer = fgetc(stream)) != EOF) {
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// parse key=value pairs
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// check for delim
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//if (buffer == ' ' || buffer == '\t' || buffer == '\n'){
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if (isspace(buffer)) {
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attr_set_append(output, ¤t_attr);
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#ifdef DEBUG
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printf("parsed attr: %s=%s\n", current_attr.name.c_str, current_attr.value);
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#endif
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// reset attribute
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attr_reset(¤t_attr);
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isKey = 1;
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continue;
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}
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if (isKey && buffer == '.') {
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isKey = 0;
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current_attr.name.c_str = "class";
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current_attr.name.len = 6;
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continue;
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}
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if (buffer == '=') {
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isKey = 0;
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continue;
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} else
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if (buffer == ']') {
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break;
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}
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if (isKey) {
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string_append(¤t_attr.name, buffer);
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} else {
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string_append(¤t_attr.value, buffer);
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}
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}
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// append last attribute
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attr_set_append(output, ¤t_attr);
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#ifdef DEBUG
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printf("parsed attr: %s=%s\n", current_attr.name.c_str, current_attr.value);
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#endif
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//memset(output, 0, sizeof(attr_set_t));
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return strip(stream);
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}
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int parse_text(int mode, FILE * stream, FILE * output) {
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#ifdef DEBUG
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printf("parse text\n");
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#endif
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int buffer = 0;
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char escaped = 0;
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while((buffer = fgetc(stream)) != EOF) {
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if (!escaped && buffer == '\\') {
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escaped = 1;
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continue;
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}
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if (!escaped && buffer == mode) {
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break;
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}
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escaped = 0;
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if (mode == '"' && html_escape(buffer, output)) {
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continue;
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}
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fputc(buffer, output);
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}
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//fprintf(stderr, "stub: parse_text\n");
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return strip(stream);
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}
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typedef struct node {
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string_t name;
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attr_set_t attributes;
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} node_t;
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// write out node
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void open_node(node_t * node, FILE * output) {
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// check for empty node (text mostly)
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if (!node->name.c_str) return;
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// start by writing tag
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fputc('<', output);
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// follow with tag name
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fputs(node->name.c_str,output);
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// add attributes
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size_t i = 0;
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attr_t * current = node->attributes.arr;
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for (; i < node->attributes.len; i++,current++) {
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if (current->value.c_str)
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fprintf(output, " %s=\"%s\"", current->name.c_str, current->value.c_str);
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else {
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fputc(' ', output);
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fputs(current->name.c_str, output);
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}
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}
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// close tag
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fputc('>', output);
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}
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void close_node(node_t * node, FILE * output) {
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if (node->name.c_str) {
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fprintf(output, "</%s>", node->name.c_str);
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}
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}
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int readName(FILE *stream, node_t *node) {
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int current = strip(stream);
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if (current == EOF) {
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return current;
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}
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do {
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if (current == '{' || current == '[') {
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break;
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}
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if (current == ' ' || current == '\t' || current == '\n') {
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current = strip(stream);
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break;
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}
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string_append(&node->name, current);
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} while((current = fgetc(stream)) != EOF);
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return current;
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}
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enum node_type {
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NODE_SELFCLOSING,
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NODE_TEXT,
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NODE_TAG
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};
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int parse_node(int current, FILE * stream, FILE * output) {
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if (current == '"' || current == '(') {
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if (current == '(') current = ')';
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return parse_text(current, stream, output);
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}
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// normal node
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node_t current_node = {};
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string_append(¤t_node.name, current);
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current = readName(stream, ¤t_node);
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if (current == EOF) {
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goto done;
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}
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#ifdef DEBUG
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printf("parse_node: %s\n", current_node.name.c_str);
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#endif
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if (current == '[') {
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current = parse_attr(stream, ¤t_node.attributes);
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}
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if (current != '{') {
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// tag is selfclosing
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open_node(¤t_node, output);
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return current;
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}
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current = strip(stream);
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open_node(¤t_node, output);
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while(current != '}' && current != EOF) {
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current = parse_node(current, stream, output);
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}
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close_node(¤t_node, output);
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done:
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return strip(stream);
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}
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int main(int argc, char ** args) {
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//getopt_long(argc, args, NULL, NULL, NULL);
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char * filename= NULL;
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FILE * output = fopen("a.html", "w");
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if (output == NULL) {
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fprintf(stderr, "could not create output file\n");
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return -1;
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}
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for(;argc > 1; --argc) {
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filename = args[argc-1];
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printf("starting conversion of %s\n", filename);
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FILE * handle = fopen(filename, "r");
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if (handle == NULL) {
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fprintf(stderr, "could not open \"%s\": %s\n", filename, strerror(errno));
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continue;
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}
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int current = strip(handle);
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while((current = parse_node(current, handle, output)) != EOF) {
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// if () {
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// fprintf(stderr, "error during parsing of node\n");
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// break;
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// }
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}
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fclose(handle);
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}
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fclose(output);
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printf("done compiling\n");
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return 0;
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}
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41
test.nhtml
41
test.nhtml
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@ -1,41 +0,0 @@
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!DOCTYPE[html]
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head {
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title { "Alle meine Entchen" }
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meta[charset=utf-8]
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style {
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(.strophe {
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border-width:1px;
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border-type:solid;
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border-color:black;
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background-color:gray;
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font-type:italic;
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color: white;
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padding: 0.5em;
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})
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$index.html$
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}
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}
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body {
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h3{ "Alle meine Entchen" }
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p[.strophe] {
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"Alle meine Entchen schwimmen auf dem See,
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schwimmen auf dem See,
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Köpfchen in das Wasser, Schwänzchen in die Höh'."
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}
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p[.strophe] {
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"Alle meine Täubchen gurren auf dem Dach,
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gurren auf dem Dach,
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eins fliegt in die Lüfte, fliegen alle nach."
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}
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p[.strophe] {
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"Alle meine Hühner scharren in dem Stroh,
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scharren in dem Stroh,
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finden sie ein Körnchen, sind sie alle froh."
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}
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p[.strophe] {
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"Alle meine Gänschen watscheln durch den Grund,
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watscheln durch den Grund,
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suchen in dem Tümpel, werden kugelrund."
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}
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}
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