3rd-party/libfort
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[A] Add function ft_set_u8strwid_func to set custom function to compute width of utf8 strings

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This commit is contained in:
seleznevae
2019-10-03 23:07:24 +03:00
parent 4e70d08b22
commit da5cbc0404
10 changed files with 193 additions and 1 deletions
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35
examples/9-non_ascii_table.c
View File

@@ -5,6 +5,24 @@
#include "fort.h"
#if defined(FT_HAVE_UTF8)
/* Custom function to compute visible width of utf8 strings */
int u8strwid(const void *beg, const void *end, size_t *width)
{
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
const char *emojis[] = {"😃", "😍"};
const size_t sz = sizeof(emojis) / sizeof(emojis[0]);
const size_t raw_len = (const char *)end - (const char *)beg;
for (size_t i = 0; i < sz; ++i) {
if (memcmp(beg, emojis[i], MIN(strlen(emojis[i]), raw_len)) == 0) {
*width = 2; /* On my terminal emojis have width of 2 chars */
return 0;
}
}
return 1;
}
#endif
int main(void)
{
@@ -28,6 +46,23 @@ int main(void)
printf("%s\n", table_str);
ft_destroy_table(table);
}
/* Example of providing custom function to compute utf8 string width */
{
ft_set_u8strwid_func(&u8strwid);
ft_table_t *table = ft_create_table();
ft_set_border_style(table, FT_NICE_STYLE);
ft_set_cell_prop(table, 0, FT_ANY_COLUMN, FT_CPROP_ROW_TYPE, FT_ROW_HEADER);
ft_u8write_ln(table, "SMILING", "Native");
ft_u8write_ln(table, "SMILING FACE WITH OPEN MOUTH", "😃");
ft_u8write_ln(table, "SMILING FACE WITH HEART-SHAPED EYES", "😍");
const char *table_str = (const char *)ft_to_u8string(table);
printf("%s\n", table_str);
ft_destroy_table(table);
}
#endif
/* Example of wchar table */

37
examples/9-non_ascii_table.cpp
View File

@@ -1,8 +1,27 @@
#include <iostream>
#include <string.h>
#include "fort.hpp"
#if defined(FT_HAVE_UTF8)
/* Custom function to compute visible width of utf8 strings */
int u8strwid(const void *beg, const void *end, size_t *width)
{
const char *emojis[] = {"😃", "😍"};
const size_t sz = sizeof(emojis) / sizeof(emojis[0]);
const size_t raw_len = (const char *)end - (const char *)beg;
for (size_t i = 0; i < sz; ++i) {
if (memcmp(beg, emojis[i], std::min(strlen(emojis[i]), raw_len)) == 0) {
*width = 2; /* On my terminal emojis have width of 2 chars */
return 0;
}
}
return 1;
}
#endif
int main(void)
{
@@ -24,6 +43,22 @@ int main(void)
std::cout << table.to_string() << std::endl;
}
/* Example of providing custom function to compute utf8 string width */
{
ft_set_u8strwid_func(&u8strwid);
fort::utf8_table table;
table.set_border_style(FT_NICE_STYLE);
table << fort::header
<< "Description" << "Native" << fort::endr
<< "SMILING FACE WITH OPEN MOUTH" << "😃" << fort::endr
<< "SMILING FACE WITH HEART-SHAPED EYES" << "😍" << fort::endr;
std::cout << table.to_string() << std::endl;
}
#endif
return 0;