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136 lines
2.8 KiB
136 lines
2.8 KiB
2 months ago
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/*
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* UCW Library -- A simple XML parser
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*
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* (c) 2007 Pavel Charvat <pchar@ucw.cz>
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*
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* This software may be freely distributed and used according to the terms
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* of the GNU Lesser General Public License.
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*/
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#undef LOCAL_DEBUG
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#include <ucw/lib.h>
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#include <ucw-xml/xml.h>
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#include <ucw-xml/dtd.h>
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#include <ucw-xml/internals.h>
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#include <ucw/stkstring.h>
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#include <ucw/ff-unicode.h>
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#include <setjmp.h>
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/*** Error handling ***/
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void NONRET
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xml_throw(struct xml_context *ctx)
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{
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ASSERT(ctx->err_code && ctx->throw_buf);
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longjmp(*(jmp_buf *)ctx->throw_buf, ctx->err_code);
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}
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void
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xml_warn(struct xml_context *ctx, const char *format, ...)
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{
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if (ctx->h_warn)
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{
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va_list args;
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va_start(args, format);
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ctx->err_msg = stk_vprintf(format, args);
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ctx->err_code = XML_ERR_WARN;
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va_end(args);
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ctx->h_warn(ctx);
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ctx->err_msg = NULL;
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ctx->err_code = XML_ERR_OK;
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}
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}
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void
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xml_error(struct xml_context *ctx, const char *format, ...)
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{
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if (ctx->h_error)
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{
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va_list args;
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va_start(args, format);
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ctx->err_msg = stk_vprintf(format, args);
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ctx->err_code = XML_ERR_ERROR;
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va_end(args);
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ctx->h_error(ctx);
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ctx->err_msg = NULL;
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ctx->err_code = XML_ERR_OK;
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}
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}
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void NONRET
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xml_fatal(struct xml_context *ctx, const char *format, ...)
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{
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va_list args;
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va_start(args, format);
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ctx->err_msg = mp_vprintf(ctx->stack, format, args);
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ctx->err_code = XML_ERR_FATAL;
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ctx->state = XML_STATE_EOF;
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va_end(args);
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if (ctx->h_fatal)
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ctx->h_fatal(ctx);
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xml_throw(ctx);
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}
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/*** Memory management ***/
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void *
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xml_hash_new(struct mempool *pool, uint size)
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{
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void *tab = mp_alloc_zero(pool, size + XML_HASH_HDR_SIZE);
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*(void **)tab = pool;
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return tab + XML_HASH_HDR_SIZE;
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}
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/*** Initialization ***/
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static struct xml_context xml_defaults = {
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.flags = XML_SRC_EOF | XML_REPORT_ALL,
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.state = XML_STATE_START,
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.h_resolve_entity = xml_def_resolve_entity,
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.chars = {
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.name = "<xml_chars>",
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.spout = xml_spout_chars,
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.can_overwrite_buffer = 1,
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},
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};
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void
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xml_init(struct xml_context *ctx)
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{
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*ctx = xml_defaults;
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ctx->pool = mp_new(65536);
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ctx->stack = mp_new(65536);
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TRACE(ctx, "init");
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}
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void
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xml_cleanup(struct xml_context *ctx)
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{
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TRACE(ctx, "cleanup");
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xml_dtd_cleanup(ctx);
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xml_sources_cleanup(ctx);
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xml_ns_cleanup(ctx);
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mp_delete(ctx->pool);
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mp_delete(ctx->stack);
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}
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void
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xml_reset(struct xml_context *ctx)
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{
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TRACE(ctx, "reset");
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struct mempool *pool = ctx->pool, *stack = ctx->stack, *ns_pool = ctx->ns_pool;
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const char **ns_by_id = ctx->ns_by_id;
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xml_dtd_cleanup(ctx);
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xml_sources_cleanup(ctx);
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mp_flush(pool);
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mp_flush(stack);
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*ctx = xml_defaults;
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ctx->pool = pool;
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ctx->stack = stack;
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ctx->ns_pool = ns_pool;
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ctx->ns_by_id = ns_by_id;
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xml_ns_reset(ctx);
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}
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