UpdateMsnSupport: xmlparser.c

/*
  Public domain                                                         
  Compile with gcc `xml2-config --cflags --libs` -o xmlparser xmlparser.c
*/

#include <stdio.h>
#include <stdlib.h>
#include <libxml/parser.h>

#if defined(LIBXML_TREE_ENABLED) && defined(LIBXML_OUTPUT_ENABLED)
int
main(int argc, char *argv[])
{
        xmlDocPtr doc;
        xmlChar *xmlbuf;
        int bufsize, i, indentspaces=1;
        xmlChar *ptr;

        if (argc != 2 && argc != 3) {
                fprintf(stderr, "Usage: %s <xmlfile> [number of indent spaces in multiples of 2 (default 1x)]\n",argv[0]);
                exit(EXIT_FAILURE);
        }
        if (argc == 3)
                indentspaces = atoi(argv[2]);

        doc = xmlReadFile(argv[1], NULL, 0);
        if (doc == NULL) {
                perror(argv[1]);
                exit(EXIT_FAILURE);
        }

        xmlDocDumpFormatMemory(doc, &xmlbuf, &bufsize, 1);

        if (indentspaces == 1)
                printf((char *) xmlbuf);
        else {
                for (ptr=xmlbuf ; ptr < xmlbuf + bufsize; ptr++) {
                        fputc((int) *ptr, stdout);
                        if ((char) *ptr == '\n') {
                                ptr++;
                                while ((char) *ptr == ' ' && ptr < xmlbuf + bufsize) {
                                        for (i = 0 ; i < indentspaces; i++)
                                                fputc((int) ' ', stdout);
                                        ptr++;
                                }
                                ptr--;
                        }
                }

        }

        xmlFree(xmlbuf);
        xmlFreeDoc(doc);

        xmlCleanupParser();

        exit(EXIT_SUCCESS);
}

#else

int
main(void)
{
        fprintf(stderr, "Your libxml2 installation needs to be compiled with tree and output support for this tool to work\nAborting.\n");
        exit(EXIT_FAILURE);
}

#endif