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#define i_implement
#include <stc/cstr.h>
// Olympics multimap example
struct OlympicsData { int year; const char *city, *country, *date; } ol_data[] = {
{2026, "Milan and Cortina d'Ampezzo", "Italy", "February 6-22"},
{2022, "Beijing", "China", "February 4-20"},
{2018, "PyeongChang", "South Korea", "February 9-25"},
{2014, "Sochi", "Russia", "February 7-23"},
{2010, "Vancouver", "Canada", "February 12-28"},
{2006, "Torino", "Italy", "February 10-26"},
{2002, "Salt Lake City", "United States", "February 8-24"},
{1998, "Nagano", "Japan", "February 7-22"},
{1994, "Lillehammer", "Norway", "February 12-27"},
{1992, "Albertville", "France", "February 8-23"},
{1988, "Calgary", "Canada", "February 13-28"},
{1984, "Sarajevo", "Yugoslavia", "February 8-19"},
{1980, "Lake Placid", "United States", "February 13-24"},
{1976, "Innsbruck", "Austria", "February 4-15"},
{1972, "Sapporo", "Japan", "February 3-13"},
{1968, "Grenoble", "France", "February 6-18"},
{1964, "Innsbruck", "Austria", "January 29-February 9"},
{1960, "Squaw Valley", "United States", "February 18-28"},
{1956, "Cortina d'Ampezzo", "Italy", "January 26 - February 5"},
{1952, "Oslo", "Norway", "February 14 - 25"},
{1948, "St. Moritz", "Switzerland", "January 30 - February 8"},
{1944, "canceled", "canceled", "canceled"},
{1940, "canceled", "canceled", "canceled"},
{1936, "Garmisch-Partenkirchen", "Germany", "February 6 - 16"},
{1932, "Lake Placid", "United States", "February 4 - 15"},
{1928, "St. Moritz", "Switzerland", "February 11 - 19"},
{1924, "Chamonix", "France", "January 25 - February 5"},
};
typedef struct { int year; cstr city, date; } OlympicLoc;
int OlympicLoc_cmp(const OlympicLoc* a, const OlympicLoc* b);
OlympicLoc OlympicLoc_clone(OlympicLoc loc);
void OlympicLoc_drop(OlympicLoc* self);
// Create a clist<OlympicLoc>, can be sorted by year.
#define i_keyclass OlympicLoc // binds _cmp, _clone and _drop.
#define i_use_cmp
#define i_tag OL
#include <stc/clist.h>
// Create a csmap<cstr, clist_OL> where key is country name
#define i_key_str // binds cstr_equ, cstr_hash, cstr_clone, ++
#define i_valclass clist_OL // binds clist_OL_clone, clist_OL_drop
#define i_tag OL
#include <stc/csmap.h>
int OlympicLoc_cmp(const OlympicLoc* a, const OlympicLoc* b) {
return a->year - b->year;
}
OlympicLoc OlympicLoc_clone(OlympicLoc loc) {
loc.city = cstr_clone(loc.city);
loc.date = cstr_clone(loc.date);
return loc;
}
void OlympicLoc_drop(OlympicLoc* self) {
cstr_drop(&self->city);
cstr_drop(&self->date);
}
int main(void)
{
// Define the multimap with destructor defered to when block is completed.
csmap_OL multimap = {0};
const clist_OL empty = clist_OL_init();
for (size_t i = 0; i < c_arraylen(ol_data); ++i)
{
struct OlympicsData* d = &ol_data[i];
OlympicLoc loc = {.year = d->year,
.city = cstr_from(d->city),
.date = cstr_from(d->date)};
// Insert an empty list for each new country, and append the entry to the list.
// If country already exist in map, its list is returned from the insert function.
clist_OL* list = &csmap_OL_emplace(&multimap, d->country, empty).ref->second;
clist_OL_push_back(list, loc);
}
// Sort locations by year for each country.
c_foreach (country, csmap_OL, multimap)
clist_OL_sort(&country.ref->second);
// Print the multimap:
c_foreach (country, csmap_OL, multimap)
{
// Loop the locations for a country sorted by year
c_foreach (loc, clist_OL, country.ref->second)
printf("%s: %d, %s, %s\n", cstr_str(&country.ref->first),
loc.ref->year,
cstr_str(&loc.ref->city),
cstr_str(&loc.ref->date));
}
csmap_OL_drop(&multimap);
}
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