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author | Olly Betts <olly@survex.com> | 2023-04-20 09:52:36 +1200 |
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committer | Olly Betts <olly@survex.com> | 2023-04-20 09:55:15 +1200 |
commit | e55a5f2da30cb2ce8bb55af05e92b6da2c52e38a (patch) | |
tree | c21fa702fbc005d2ee49045fb438cce841d4b614 /Lib/go | |
parent | c60797e684828556f279eeec295a0b1cb50db832 (diff) | |
parent | 0e0e2fffb97d39ff52e2d3c68a4d30c38c692630 (diff) | |
download | swig-e55a5f2da30cb2ce8bb55af05e92b6da2c52e38a.tar.gz |
Merge branch 'go-argcargv'
Diffstat (limited to 'Lib/go')
-rw-r--r-- | Lib/go/argcargv.i | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/Lib/go/argcargv.i b/Lib/go/argcargv.i new file mode 100644 index 000000000..437832bb2 --- /dev/null +++ b/Lib/go/argcargv.i @@ -0,0 +1,64 @@ +/* ------------------------------------------------------------ + * SWIG library containing argc and argv multi-argument typemaps + * ------------------------------------------------------------ */ + +%typemap(gotype) (int ARGC, char **ARGV) "[]string" + +%insert(go_wrapper) %{ +//export cgo_swig_get_string_slice_idx +func cgo_swig_get_string_slice_idx(s []string, i C.swig_intgo) string { + return s[i] +} +%} + +%{ +extern +#ifdef __cplusplus + "C" +#endif +_gostring_ cgo_swig_get_string_slice_idx(_goslice_ s, intgo i); +%} + +%typemap(in) (int ARGC, char **ARGV) { + $1_ltype len = ($1_ltype)$input.len; + size_t aralloc = (size_t)((len + 1) * sizeof(char *)); + if (len <= 0 || $input.array == NULL) { + _swig_gopanic("array must contain at least 1 element"); + } + $2 = ($2_ltype) Swig_malloc((int)aralloc); + if ($2 == NULL) { + _swig_gopanic("fail allocating memory for array"); + } + memset($2, 0, aralloc); + $1 = len; + { + $1_ltype i; + for (i = 0; i < len; i++) { + char *p; + _gostring_ st = cgo_swig_get_string_slice_idx($input, (intgo)i); + if (st.n <= 0) { + _swig_gopanic("string length must be positive"); + } + p = (char *) Swig_malloc((int)(st.n + 1)); + if (p == NULL) { + _swig_gopanic("fail allocating memory for a string"); + } + memcpy(p, st.p, st.n); + p[st.n] = 0; + $2[i] = p; + } + $2[i] = NULL; + } +} + +%typemap(freearg) (int ARGC, char **ARGV) { + if ($2 != NULL) { + $1_ltype i; + for (i = 0; i < $1; i++) { + if ($2[i] != NULL) { + Swig_free((void *)$2[i]); + } + } + Swig_free((void *)$2); + } +} |