base

Makefile

@@ -0,0 +1,25 @@
+CC=gcc
+BINDIR=out
+
+DEBUG_FLAGS=-Wall -Werror -ggdb
+
+CFLAGS=$(DEBUG_FLAGS) $(shell pkg-config libxml-2.0 --cflags) -ansi -I ./headers
+LDFLAGS=$(shell pkg-config libxml-2.0 --libs)
+	
+BINARY=generarxml
+
+OBJS = \
+	main.o \
+	readconfig.o
+
+all:	bin
+
+bin:	$(OBJS)
+	$(CC) $(xml2-config --cflags --libs) $(CFLAGS) $(OBJS) $(LDFLAGS) \
+	-o $(BINDIR)/$(BINARY)
+
+clean:
+	rm -fR $(BINDIR)/$(BINARY) *.o
+
+%.o:	%.c
+	$(CC) $(xml2-config --cflags --libs) $(CFLAGS) -c $< -o $@ $(LDFLAGS)

headers/main.h

@@ -0,0 +1,2 @@
+void printusage(int error);
+char *output_file = "";

headers/readconfig.h

@@ -0,0 +1 @@
+int readconfig(char *config_file);

main.c

@@ -0,0 +1,53 @@
+/* Christopher Cromer
+ * Ingeniería Civil en Informática
+ * */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "main.h"
+#include "readconfig.h"
+
+int main(int argc, char *argv[]) {
+    char *config_file = "";
+
+    if (argc == 1) {
+        /* No arguments were passed */
+        printusage(0);
+        return 1;
+    }
+    
+    /* Read the command line arguments */
+    int i;
+	for (i = 1; i < argc; i++) {
+		if ((strcmp(argv[i], "-c") == 0 || strcmp(argv[i], "--config") == 0) && i != argc - 1 && strlen(config_file) == 0) {
+			config_file = (char *) malloc(strlen(argv[i + 1]) * sizeof(char));
+			config_file = argv[i + 1];
+            /* Use config file */
+            break;
+		}
+		else {
+            /* Incorrect usage or used the same option more than once */
+			printusage(1);
+			return 1;
+		}
+	}
+
+    int status = readconfig(config_file);
+    if (status != 0) {
+        return 1;
+    }
+
+    return 0;
+}
+
+/* Print how to use the program
+ * */
+void printusage(int error) {
+	if (error == 1) {
+		printf("Opcion desconocido!\n\n");
+	}
+
+	printf("usage: generarxml [opciones] \n");
+    printf("  -s, --config <archivo>    archivo de configuración\n");
+}

out/chris.conf

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE config SYSTEM "config.dtd">
+<config>
+    <output>chris.xml</output>
+    <bible>El Santo Evangelio Según</bible>
+    <book>SAN MATEO</book>
+    <chapter>
+        <name>MATEO</name>
+        <number>16-20</number>
+    </chapter>
+</config>

out/config.dtd

@@ -0,0 +1,22 @@
+<?xml encoding="UTF-8"?>
+
+<!ELEMENT config (output,bible,book,chapter)>
+<!ATTLIST config xmlns CDATA #FIXED ''>
+
+<!ELEMENT output (#PCDATA)>
+<!ATTLIST output xmlns CDATA #FIXED ''>
+
+<!ELEMENT bible (#PCDATA)>
+<!ATTLIST bible xmlns CDATA #FIXED ''>
+
+<!ELEMENT book (#PCDATA)>
+<!ATTLIST book xmlns CDATA #FIXED ''>
+
+<!ELEMENT chapter (name,number)>
+<!ATTLIST chapter xmlns CDATA #FIXED ''>
+
+<!ELEMENT name (#PCDATA)>
+<!ATTLIST name xmlns CDATA #FIXED ''>
+
+<!ELEMENT number (#PCDATA)>
+<!ATTLIST number xmlns CDATA #FIXED ''>

readconfig.c

@@ -0,0 +1,64 @@
+#include <stdio.h>
+#include <string.h>
+#include <libxml/parser.h>
+#include <libxml/tree.h>
+#include <libxml/xmlIO.h>
+#include <libxml/xinclude.h>
+
+#ifdef LIBXML_TREE_ENABLED
+
+static void
+print_element_names(xmlNode * a_node)
+{
+    xmlNode *cur_node = NULL;
+
+    for (cur_node = a_node; cur_node; cur_node = cur_node->next) {
+        if (cur_node->type == XML_ELEMENT_NODE) {
+            printf("node type: Element, name: %s\n", cur_node->name);
+        }
+
+        print_element_names(cur_node->children);
+    }
+}
+
+int readconfig(char *config_file) {
+    /* Initilize the library */
+    LIBXML_TEST_VERSION
+    
+    xmlParserCtxtPtr context;
+    xmlDocPtr config = NULL;
+    xmlNodePtr root_element = NULL;
+    
+    context = xmlNewParserCtxt();
+    if (context == NULL) {
+        fprintf(stderr, "No pudo alocar contexto de analizador!\n");
+        return 1;
+    }
+
+    config = xmlCtxtReadFile(context, config_file, NULL, XML_PARSE_DTDVALID);
+    if (config == NULL) {
+        fprintf(stderr, "Falló analizar %s\n", config_file);
+    }
+    else {
+        if (context->valid == 0) {
+            fprintf(stderr, "Falló validar %s\n", config_file);
+        }
+
+        root_element = xmlDocGetRootElement(config);
+        print_element_names(root_element);
+        
+        xmlFreeDoc(config);
+    }
+    xmlFreeParserCtxt(context);
+
+    return 0;
+}
+
+#else
+
+int readconfig(char *config_file) {
+    fprintf(stderr, "libxml2 no tiene tree support compilado\n");
+    return 1;
+}
+
+#endif