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-rw-r--r--src/utils/Makefile49
-rw-r--r--src/utils/buffer.c156
-rw-r--r--src/utils/errors.c70
-rw-r--r--src/utils/utils.h28
4 files changed, 303 insertions, 0 deletions
diff --git a/src/utils/Makefile b/src/utils/Makefile
new file mode 100644
index 0000000..e053673
--- /dev/null
+++ b/src/utils/Makefile
@@ -0,0 +1,49 @@
+# Child makefile fragment
+#
+# Toolchain is provided by top-level makefile
+#
+# Variables provided by top-level makefile
+#
+# COMPONENT The name of the component
+# EXPORT The location of the export directory
+# TOP The location of the source tree root
+# RELEASEDIR The place to put release objects
+# DEBUGDIR The place to put debug objects
+#
+# do_include Canned command sequence to include a child makefile
+#
+# Variables provided by parent makefile:
+#
+# DIR The name of the directory we're in, relative to $(TOP)
+#
+# Variables we can manipulate:
+#
+# ITEMS_CLEAN The list of items to remove for "make clean"
+# ITEMS_DISTCLEAN The list of items to remove for "make distclean"
+# TARGET_TESTS The list of target names to run for "make test"
+#
+# SOURCES The list of sources to build for $(COMPONENT)
+#
+# Plus anything from the toolchain
+
+# Push parent directory onto the directory stack
+sp := $(sp).x
+dirstack_$(sp) := $(d)
+d := $(DIR)
+
+# Manipulate include paths
+override CFLAGS := $(CFLAGS) -I$(d)
+
+# Sources
+SRCS_$(d) := buffer.c errors.c
+
+# Append to sources for component
+SOURCES += $(addprefix $(d), $(SRCS_$(d)))
+
+# Now include any children we may have
+MAKE_INCLUDES := $(wildcard $(d)*/Makefile)
+$(eval $(foreach INC, $(MAKE_INCLUDES), $(call do_include,$(INC))))
+
+# Finally, pop off the directory stack
+d := $(dirstack_$(sp))
+sp := $(basename $(sp))
diff --git a/src/utils/buffer.c b/src/utils/buffer.c
new file mode 100644
index 0000000..21c47fc
--- /dev/null
+++ b/src/utils/buffer.c
@@ -0,0 +1,156 @@
+/*
+ * This file is part of LibParserUtils.
+ * Licensed under the MIT License,
+ * http://www.opensource.org/licenses/mit-license.php
+ * Copyright 2008 John-Mark Bell <jmb@netsurf-browser.org>
+ */
+
+#include <string.h>
+
+#include <parserutils/utils/buffer.h>
+
+#define DEFAULT_SIZE (4096)
+
+/**
+ * Create a memory buffer
+ *
+ * \param alloc Memory (de)allocation function
+ * \param pw Pointer to client-specific private data
+ * \return Pointer to memory buffer, or NULL on memory exhaustion
+ */
+parserutils_buffer *parserutils_buffer_create(parserutils_alloc alloc, void *pw)
+{
+ parserutils_buffer *buffer =
+ alloc(NULL, sizeof(parserutils_buffer), pw);
+
+ if (buffer == NULL)
+ return NULL;
+
+ buffer->data = alloc(NULL, DEFAULT_SIZE, pw);
+ if (buffer->data == NULL) {
+ alloc(buffer, 0, pw);
+ return NULL;
+ }
+
+ buffer->length = 0;
+ buffer->allocated = DEFAULT_SIZE;
+
+ buffer->alloc = alloc;
+ buffer->pw = pw;
+
+ return buffer;
+}
+
+/**
+ * Destroy a memory buffer
+ *
+ * \param buffer The buffer to destroy
+ */
+void parserutils_buffer_destroy(parserutils_buffer *buffer)
+{
+ if (buffer == NULL)
+ return;
+
+ buffer->alloc(buffer->data, 0, buffer->pw);
+ buffer->alloc(buffer, 0, buffer->pw);
+}
+
+/**
+ * Append data to a memory buffer
+ *
+ * \param buffer The buffer to append to
+ * \param data The data to append
+ * \param len The length, in bytes, of the data to append
+ * \return PARSERUTILS_OK on success, appropriate error otherwise.
+ */
+parserutils_error parserutils_buffer_append(parserutils_buffer *buffer,
+ const uint8_t *data, size_t len)
+{
+ while (len >= buffer->allocated - buffer->length) {
+ parserutils_error error = parserutils_buffer_grow(buffer);
+ if (error != PARSERUTILS_OK)
+ return error;
+ }
+
+ memcpy(buffer->data + buffer->length, data, len);
+
+ buffer->length += len;
+
+ return PARSERUTILS_OK;
+}
+
+/**
+ * Insert data into a memory buffer
+ *
+ * \param buffer The buffer to insert into
+ * \param offset The offset into the buffer to insert at
+ * \param data The data to insert
+ * \param len The length, in bytes, of the data to insert
+ * \return PARSERUTILS_OK on success, appropriate error otherwise
+ */
+parserutils_error parserutils_buffer_insert(parserutils_buffer *buffer,
+ size_t offset, const uint8_t *data, size_t len)
+{
+ if (offset > buffer->length)
+ return PARSERUTILS_BADPARM;
+
+ if (offset == buffer->length)
+ return parserutils_buffer_append(buffer, data, len);
+
+ while (len >= buffer->allocated - buffer->length) {
+ parserutils_error error = parserutils_buffer_grow(buffer);
+ if (error != PARSERUTILS_OK)
+ return error;
+ }
+
+ memmove(buffer->data + buffer->length + len,
+ buffer->data + offset, buffer->length - offset);
+
+ memcpy(buffer->data + offset, data, len);
+
+ buffer->length += len;
+
+ return PARSERUTILS_OK;
+}
+
+/**
+ * Discard a section of a memory buffer
+ *
+ * \param buffer The buffer to discard data from
+ * \param offset The offset into the buffer of the start of the section
+ * \param len The number of bytes to discard
+ * \return PARSERUTILS_OK on success, appropriate error otherwise.
+ */
+parserutils_error parserutils_buffer_discard(parserutils_buffer *buffer,
+ size_t offset, size_t len)
+{
+ if (offset >= buffer->length || offset + len > buffer->length)
+ return PARSERUTILS_BADPARM;
+
+ memmove(buffer->data + offset, buffer->data + offset + len,
+ buffer->length - len);
+
+ buffer->length -= len;
+
+ return PARSERUTILS_OK;
+}
+
+/**
+ * Extend the amount of space allocated for a memory buffer
+ *
+ * \param buffer The buffer to extend
+ * \return PARSERUTILS_OK on success, appropriate error otherwise.
+ */
+parserutils_error parserutils_buffer_grow(parserutils_buffer *buffer)
+{
+ uint8_t *temp = buffer->alloc(buffer->data,
+ buffer->allocated * 2, buffer->pw);
+ if (temp == NULL)
+ return PARSERUTILS_NOMEM;
+
+ buffer->data = temp;
+ buffer->allocated *= 2;
+
+ return PARSERUTILS_OK;
+}
+
diff --git a/src/utils/errors.c b/src/utils/errors.c
new file mode 100644
index 0000000..353cda1
--- /dev/null
+++ b/src/utils/errors.c
@@ -0,0 +1,70 @@
+/*
+ * This file is part of LibParserUtils.
+ * Licensed under the MIT License,
+ * http://www.opensource.org/licenses/mit-license.php
+ * Copyright 2007 John-Mark Bell <jmb@netsurf-browser.org>
+ */
+
+#include <string.h>
+
+#include <parserutils/errors.h>
+
+/**
+ * Convert a parserutils error code to a string
+ *
+ * \param error The error code to convert
+ * \return Pointer to string representation of error, or NULL if unknown.
+ */
+const char *parserutils_error_to_string(parserutils_error error)
+{
+ const char *result = NULL;
+
+ switch (error) {
+ case PARSERUTILS_OK:
+ result = "No error";
+ break;
+ case PARSERUTILS_NOMEM:
+ result = "Insufficient memory";
+ break;
+ case PARSERUTILS_BADPARM:
+ result = "Bad parameter";
+ break;
+ case PARSERUTILS_INVALID:
+ result = "Invalid input";
+ break;
+ case PARSERUTILS_FILENOTFOUND:
+ result = "File not found";
+ break;
+ case PARSERUTILS_NEEDDATA:
+ result = "Insufficient data";
+ break;
+ }
+
+ return result;
+}
+
+/**
+ * Convert a string representation of an error name to a parserutils error code
+ *
+ * \param str String containing error name
+ * \param len Length of string (bytes)
+ * \return Error code, or PARSERUTILS_OK if unknown
+ */
+parserutils_error parserutils_error_from_string(const char *str, size_t len)
+{
+ if (strncmp(str, "PARSERUTILS_OK", len) == 0) {
+ return PARSERUTILS_OK;
+ } else if (strncmp(str, "PARSERUTILS_NOMEM", len) == 0) {
+ return PARSERUTILS_NOMEM;
+ } else if (strncmp(str, "PARSERUTILS_BADPARM", len) == 0) {
+ return PARSERUTILS_BADPARM;
+ } else if (strncmp(str, "PARSERUTILS_INVALID", len) == 0) {
+ return PARSERUTILS_INVALID;
+ } else if (strncmp(str, "PARSERUTILS_FILENOTFOUND", len) == 0) {
+ return PARSERUTILS_FILENOTFOUND;
+ } else if (strncmp(str, "PARSERUTILS_NEEDDATA", len) == 0) {
+ return PARSERUTILS_NEEDDATA;
+ }
+
+ return PARSERUTILS_OK;
+}
diff --git a/src/utils/utils.h b/src/utils/utils.h
new file mode 100644
index 0000000..5162945
--- /dev/null
+++ b/src/utils/utils.h
@@ -0,0 +1,28 @@
+/*
+ * This file is part of LibParserUtils.
+ * Licensed under the MIT License,
+ * http://www.opensource.org/licenses/mit-license.php
+ * Copyright 2007 John-Mark Bell <jmb@netsurf-browser.org>
+ */
+
+#ifndef parserutils_utils_h_
+#define parserutils_utils_h_
+
+#ifndef max
+#define max(a,b) ((a)>(b)?(a):(b))
+#endif
+
+#ifndef min
+#define min(a,b) ((a)<(b)?(a):(b))
+#endif
+
+#ifndef SLEN
+/* Calculate length of a string constant */
+#define SLEN(s) (sizeof((s)) - 1) /* -1 for '\0' */
+#endif
+
+#ifndef UNUSED
+#define UNUSED(x) ((x)=(x))
+#endif
+
+#endif
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