diff options
Diffstat (limited to 'gawkapi.h')
| -rw-r--r-- | gawkapi.h | 38 |
1 files changed, 37 insertions, 1 deletions
@@ -263,7 +263,7 @@ typedef struct awk_two_way_processor { /* Current version of the API. */ enum { GAWK_API_MAJOR_VERSION = 1, - GAWK_API_MINOR_VERSION = 1 + GAWK_API_MINOR_VERSION = 2 }; /* A number of typedefs related to different types of values. */ @@ -674,6 +674,39 @@ typedef struct gawk_api { void *(*api_calloc)(size_t nmemb, size_t size); void *(*api_realloc)(void *ptr, size_t size); void (*api_free)(void *ptr); + + /* + * Look up a file. If the name is NULL or name_len is 0, it returns + * data for the currently open input file corresponding to FILENAME + * (and it will not access the filetype or typelen arguments, so those + * may be undefined). + * If the file is not already open, it tries to open it. + * The "filetype" argument should be one of: + * ">", ">>", "<", "|>", "|<", and "|&" + * If the file is not already open, and the fd argument is non-negative, + * gawk will use that file descriptor instead of opening the file + * in the usual way. If the fd is non-negative, but the file exists + * already, gawk ignores the fd and returns the existing file. It is + * the caller's responsibility to notice that the fd in the returned + * awk_input_buf_t does not match the requested value. Note that + * supplying a file descriptor is currently NOT supported for pipes. + * It should work for input, output, append, and two-way (coprocess) + * sockets. If the filetype is two-way, we assume that it is a socket! + * Note that in the two-way case, the intput and output file descriptors + * may differ. To check for success, one must check that either of + * them matches. + */ + awk_bool_t (*api_get_file)(awk_ext_id_t id, + const char *name, + size_t name_len, + const char *filetype, + size_t typelen, int fd, + /* + * Return values (on success, one or both should + * be non-NULL): + */ + const awk_input_buf_t **ibufp, + const awk_output_buf_t **obufp); } gawk_api_t; #ifndef GAWK /* these are not for the gawk code itself! */ @@ -756,6 +789,9 @@ typedef struct gawk_api { #define release_value(value) \ (api->api_release_value(ext_id, value)) +#define get_file(name, namelen, filetype, typelen, fd, ibuf, obuf) \ + (api->api_get_file(ext_id, name, namelen, filetype, typelen, fd, ibuf, obuf)) + #define register_ext_version(version) \ (api->api_register_ext_version(ext_id, version)) |