/**
* Handle a call to fopen() made by JavaScript.
*
* fopen expects 2 parameters:
* 0: the path of the file to open
* 1: the mode string
* on success, fopen returns a result in |output| separated by \1:
* 0: "fopen"
* 1: the filename opened
* 2: the file index
* on failure, fopen returns an error string in |output|.
*
* @param[in] num_params The number of params in |params|.
* @param[in] params An array of strings, parameters to this function.
* @param[out] output A string to write informational function output to.
* @return An errorcode; 0 means success, anything else is a failure. */
int HandleFopen(int num_params, char** params, char** output) {
FILE* file;
int file_index;
const char* filename;
const char* mode;
if (num_params != 2) {
*output = PrintfToNewString("Error: fopen takes 2 parameters.");
return 1;
}
filename = params[0];
mode = params[1];
file = fopen(filename, mode);
if (!file) {
*output = PrintfToNewString("Error: fopen returned a NULL FILE*.");
return 2;
}
file_index = AddFileToMap(file);
if (file_index == -1) {
*output = PrintfToNewString(
"Error: Example only allows %d open file handles.", MAX_OPEN_FILES);
return 3;
}
*output = PrintfToNewString("fopen\1%s\1%d", filename, file_index);
return 0;
}
/**
* Handle a call to fopen() made by JavaScript.
*
* fopen expects 2 parameters:
* 0: the path of the file to open
* 1: the mode string
* on success, fopen returns a result in |output|:
* 0: "fopen"
* 1: the filename opened
* 2: the file index
* on failure, fopen returns an error string in |out_error|.
*/
int HandleFopen(struct PP_Var params,
struct PP_Var* output,
const char** out_error) {
CHECK_PARAM_COUNT(fopen, 2);
PARAM_STRING(0, filename);
PARAM_STRING(1, mode);
FILE* file = fopen(filename, mode);
if (!file) {
*out_error = PrintfToNewString("fopen returned a NULL FILE*");
return 1;
}
int file_index = AddFileToMap(file);
if (file_index == -1) {
*out_error = PrintfToNewString("Example only allows %d open file handles",
MAX_OPEN_FILES);
return 1;
}
CREATE_RESPONSE(fopen);
RESPONSE_STRING(filename);
RESPONSE_INT(file_index);
return 0;
}
