From b792cabbcb3000ce4146bad3047a6b2ee390864f Mon Sep 17 00:00:00 2001 From: raster Date: Sun, 22 Apr 2012 05:27:25 +0000 Subject: [PATCH 1/1] =?utf8?q?From:=20J=C3=A9r=C3=B4me=20Pinot=20=20Subject:=20[E-devel]=20[patch]=20eina=5Fsimple=5Fxml?= =?utf8?q?=20example?= MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Here is an example for eina_simple_xml This patch includes a small sample XML file, source code (for parsing and printing it out) and the doxygen doc. git-svn-id: svn+ssh://svn.enlightenment.org/var/svn/e/trunk/eina@70385 7cbeb6ba-43b4-40fd-8cce-4c39aea84d33 --- src/examples/Makefile.am | 2 + src/examples/chat.xml | 24 ++++++ src/examples/eina_simple_xml_parser_01.c | 127 +++++++++++++++++++++++++++++++ src/include/eina_simple_xml_parser.h | 77 +++++++++++++++++++ 4 files changed, 230 insertions(+) create mode 100644 src/examples/chat.xml create mode 100644 src/examples/eina_simple_xml_parser_01.c diff --git a/src/examples/Makefile.am b/src/examples/Makefile.am index c8d80f9..26af9fe 100644 --- a/src/examples/Makefile.am +++ b/src/examples/Makefile.am @@ -41,6 +41,7 @@ SRCS = \ eina_model_01.c \ eina_model_02.c \ eina_model_03.c \ + eina_simple_xml_parser_01.c \ eina_value_01.c \ eina_value_02.c \ eina_value_03.c \ @@ -85,6 +86,7 @@ examples_PROGRAMS += \ eina_model_02 \ eina_model_03 \ eina_model_04 \ + eina_simple_xml_parser_01 \ eina_value_01 \ eina_value_02 \ eina_value_03 \ diff --git a/src/examples/chat.xml b/src/examples/chat.xml new file mode 100644 index 0000000..140269c --- /dev/null +++ b/src/examples/chat.xml @@ -0,0 +1,24 @@ + + + + + houplaboom + Is this an XML test? + + + fredx + I'm seeing bald people. + + + NedFlanders + Don't call him! + + + Single + I'm not bald! + + + ngc891 + It was an XML test. + + diff --git a/src/examples/eina_simple_xml_parser_01.c b/src/examples/eina_simple_xml_parser_01.c new file mode 100644 index 0000000..e85f2f0 --- /dev/null +++ b/src/examples/eina_simple_xml_parser_01.c @@ -0,0 +1,127 @@ +//Compile with: +//gcc -Wall -o eina_simple_xml_01 eina_simple_xml_01.c `pkg-config --cflags --libs eina` + +#include +#include +#include + +static Eina_Bool _xml_attr_cb(void *data, const char *key, const char *value); +static Eina_Bool _xml_tag_cb(void *data, Eina_Simple_XML_Type type, + const char *content, unsigned offset, unsigned length); +static Eina_Bool _print(const void *container, void *data, void *fdata); + +Eina_Bool tag_login = EINA_FALSE; +Eina_Bool tag_message = EINA_FALSE; + +int +main(void) +{ + FILE *file; + long size; + char *buffer; + Eina_Array *array; + + eina_init(); + + if ((file = fopen("chat.xml", "rb"))) + { + fseek(file, 0, SEEK_END); + size = ftell(file); + fseek(file, 0, SEEK_SET); + + if ((buffer = malloc(size))) + { + fread(buffer, 1, size, file); + + array = eina_array_new(10); + eina_simple_xml_parse(buffer, size, EINA_TRUE, + _xml_tag_cb, array); + + eina_array_foreach(array, _print, NULL); + + eina_array_free(array); + free(buffer); + } + else + { + EINA_LOG_ERR("Can't allocate memory!"); + } + fclose(file); + } + else + { + EINA_LOG_ERR("Can't open chat.xml!"); + } + eina_shutdown(); + + return 0; +} + +static Eina_Bool +_xml_tag_cb(void *data, Eina_Simple_XML_Type type, const char *content, + unsigned offset, unsigned length) +{ + char buffer[length+1]; + Eina_Array *array = data; + char str[512]; + + if (type == EINA_SIMPLE_XML_OPEN) + { + if(!strncmp("post", content, strlen("post"))) + { + const char *tags = eina_simple_xml_tag_attributes_find(content, + length); + eina_simple_xml_attributes_parse(tags, length - (tags - content), + _xml_attr_cb, str); + } + else if (!strncmp("login>", content, strlen("login>"))) + { + tag_login = EINA_TRUE; + } + else if (!strncmp("message>", content, strlen("message>"))) + { + tag_message = EINA_TRUE; + } + } + else if (type == EINA_SIMPLE_XML_DATA) + { + if (tag_login == EINA_TRUE) + { + snprintf(buffer, sizeof(buffer), content); + strncat(str, "<", 1); + strncat(str, buffer, sizeof(buffer)); + strncat(str, "> ", 2); + tag_login = EINA_FALSE; + } + else if (tag_message == EINA_TRUE) + { + snprintf(buffer, sizeof(buffer), content); + strncat(str, buffer, sizeof(buffer)); + tag_message = EINA_FALSE; + eina_array_push(array, strdup(str)); + } + } + + return EINA_TRUE; +} + +static Eina_Bool +_xml_attr_cb(void *data, const char *key, const char *value) +{ + char *str = data; + + if(!strcmp("id", key)) + { + snprintf(str, sizeof(value) + 3, "(%s) ", value); + } + + return EINA_TRUE; +} + +static Eina_Bool +_print(const void *container, void *data, void *fdata) +{ + printf("%s\n", (char *)data); + + return EINA_TRUE; +} diff --git a/src/include/eina_simple_xml_parser.h b/src/include/eina_simple_xml_parser.h index d32f646..4f7d2f5 100644 --- a/src/include/eina_simple_xml_parser.h +++ b/src/include/eina_simple_xml_parser.h @@ -27,6 +27,80 @@ #include "eina_inlist.h" /** + * @page eina_simple_xml_parser_example_01_page + * @dontinclude eina_simple_xml_parser_01.c + * + * We are going to parse an XML sample file and print the data to stdout. + * + * Like all examples we start by including Eina: + * @skipline #include + * + * We declare 2 booleans to keep track of tags: + * @skipline tag_login + * @skipline tag_message + * + * Here we declare some variables and initialize eina: + * @until eina_init + * + * We fill buffer with the XML data from chat.xml: + * @until fread + * + * We will use an Eina_Array to store the data: + * @skipline array + * + * Here we call eina_simple_xml_parse(). We pass the buffer with data, its size, + * we ask to strip leading and trailing whitespace, we give the callback + * function and the array to store the formatted data: + * @until _xml_tag_cb + * + * This will loop over the array and print the data using _print callback: + * @skipline foreach + * + * This is the main XML parser callback, it will check for known tags and get + * the corresponding values: + * @skip static + * @until str + * + * We first check for opening tag: + * @skipline type + * + * If we know the tag should have attributes, then we find them using + * eina_simple_xml_tag_attributes_find() and give them to another parsing + * function using eina_simple_xml_attributes_parse(): + * @until _xml_attr_cb + * + * We check for other known tags: + * @until tag_message + * + * We then check data for corresponding tag: + * @until EINA_FALSE + * + * We are doing the formatting in same time and put all the children + * in str. + * @until EINA_FALSE + * + * Finally, we store our string in the array: + * @skipline push + * + * This is the callback to parse the attributes, we check for key name and keep + * the value: + * @skip static + * @until snprintf + * + * This is the function that simply print items of the array: + * @until EINA_TRUE + * + * You can see the full source code + * @ref eina_simple_xml_parser_example_01 "here". + */ + +/** + * @page eina_simple_xml_parser_example_01 + * @include eina_simple_xml_parser_01.c + * @example eina_simple_xml_parser_01.c + */ + +/** * @defgroup Eina_Simple_XML_Group Simple_XML * * Simplistic relaxed SAX-like XML parser. @@ -48,6 +122,9 @@ * will not tokenize this. If you want you can use * eina_simple_xml_tag_attributes_find() and then * eina_simple_xml_attributes_parse(). + * + * For more information, see + * @ref eina_simple_xml_parser_example_01_page "this example". */ /** -- 2.7.4