src/context.c


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#include <assert.h>
#include <stdio.h>
#include <stdlib.h>

#include <context.h>
#include <tokenize.h>
#include <treeify.h>

struct ctx *context_create(const char *path)
{
	struct ctx *ctx = calloc(1, sizeof(*ctx));
	ctx->tokens = calloc(TOKENS_MAX, sizeof(*ctx->tokens));
	ctx->path = path; // TODO: strdup?

	FILE *file = fopen(path, "r");
	assert(file);

	// Find size of file
	fseek(file, 0, SEEK_END);
	ctx->size = ftell(file);
	rewind(file);
	assert(ctx->size);

	ctx->raw = malloc(ctx->size + 1);
	assert(ctx->raw);
	fread(ctx->raw, 1, ctx->size, file);
	fclose(file);

	ctx->raw[ctx->size] = 0;

	ctx->tree.head = tree_create();
	ctx->tree.current = NULL;

	return ctx;
}

void context_destroy(struct ctx *ctx)
{
	if (!ctx)
		return;

	if (ctx->raw)
		free(ctx->raw);

	if (ctx->data && ctx->data != ctx->raw)
		free(ctx->data);

	if (ctx->tokens)
		free(ctx->tokens);

	if (ctx->tree.head)
		tree_destroy(ctx->tree.head);

	free(ctx);
}

void context_rewind(struct ctx *ctx)
{
	ctx->line = 0;
	ctx->column = 0;
}