52 lines
930 B
52 lines
930 B
#include "cache.h" |
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#include "mergesort.h" |
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struct line { |
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char *text; |
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struct line *next; |
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}; |
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static void *get_next(const void *a) |
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{ |
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return ((const struct line *)a)->next; |
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} |
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static void set_next(void *a, void *b) |
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{ |
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((struct line *)a)->next = b; |
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} |
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static int compare_strings(const void *a, const void *b) |
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{ |
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const struct line *x = a, *y = b; |
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return strcmp(x->text, y->text); |
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} |
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int main(int argc, const char **argv) |
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{ |
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struct line *line, *p = NULL, *lines = NULL; |
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struct strbuf sb = STRBUF_INIT; |
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for (;;) { |
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if (strbuf_getwholeline(&sb, stdin, '\n')) |
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break; |
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line = xmalloc(sizeof(struct line)); |
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line->text = strbuf_detach(&sb, NULL); |
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if (p) { |
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line->next = p->next; |
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p->next = line; |
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} else { |
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line->next = NULL; |
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lines = line; |
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} |
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p = line; |
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} |
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lines = llist_mergesort(lines, get_next, set_next, compare_strings); |
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while (lines) { |
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printf("%s", lines->text); |
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lines = lines->next; |
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} |
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return 0; |
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}
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