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#include <stdio.h>
#include <stdlib.h>

#include <mxml.h>

int process(FILE *f) {
	mxml_node_t *root, *node, *next;
	const char* elename;

	root = mxmlLoadFile(NULL, f, MXML_TEXT_CALLBACK);

	node = mxmlFindElement(root, root, "title-group",
										 NULL, NULL, MXML_DESCEND);

	while ((next = mxmlWalkNext(node, root, MXML_DESCEND))) {
		elename = mxmlGetElement(next);

		if (!elename) {
			node = next;
			continue;
		}

		if (!strcmp(elename, "article-title")) {
			printf("article title:");
			for (mxml_node_t *txt = next->child; txt; txt = mxmlGetNextSibling(txt)) {
				// Thanks to
				//
				// https://github.com/younix/sj/blob/master/messaged.c#L237
				const char* text = mxmlGetText(txt, NULL);
				printf(" %s", text);
			}

			printf("\n");
			break;
		}

		node = next;
	}

	mxmlDelete(root);

	return 0;
}

int main(int argc, char *argv[]) {
	FILE *f;

	for (int i = 1; i < argc; i++) {
		f = fopen(argv[i], "r");
		process(f);
		fclose(f);
	}

	return 0;
}