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Merge pull request #56 from Forty-Bot/nparse

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Add function to only parse n bytes from input
This commit is contained in:
Daniel Holden
2016-06-30 16:41:47 +01:00
committed by GitHub
parent 2a19e4c451 570ba8907a
commit 4080345c4d
2 changed files with 39 additions and 0 deletions
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38
mpc.c
View File

@@ -127,6 +127,36 @@ static mpc_input_t *mpc_input_new_string(const char *filename, const char *strin
return i;
}
static mpc_input_t *mpc_input_new_nstring(const char *filename, const char *string, size_t length) {
mpc_input_t *i = malloc(sizeof(mpc_input_t));
i->filename = malloc(strlen(filename) + 1);
strcpy(i->filename, filename);
i->type = MPC_INPUT_STRING;
i->state = mpc_state_new();
i->string = malloc(length + 1);
strncpy(i->string, string, length);
i->buffer = NULL;
i->file = NULL;
i->suppress = 0;
i->backtrack = 1;
i->marks_num = 0;
i->marks_slots = MPC_INPUT_MARKS_MIN;
i->marks = malloc(sizeof(mpc_state_t) * i->marks_slots);
i->lasts = malloc(sizeof(char) * i->marks_slots);
i->last = '\0';
i->mem_index = 0;
memset(i->mem_full, 0, sizeof(char) * MPC_INPUT_MEM_NUM);
return i;
}
static mpc_input_t *mpc_input_new_pipe(const char *filename, FILE *pipe) {
mpc_input_t *i = malloc(sizeof(mpc_input_t));
@@ -1223,6 +1253,14 @@ int mpc_parse(const char *filename, const char *string, mpc_parser_t *p, mpc_res
return x;
}
int mpc_nparse(const char *filename, const char *string, size_t length, mpc_parser_t *p, mpc_result_t *r) {
int x;
mpc_input_t *i = mpc_input_new_nstring(filename, string, length);
x = mpc_parse_input(i, p, r);
mpc_input_delete(i);
return x;
}
int mpc_parse_file(const char *filename, FILE *file, mpc_parser_t *p, mpc_result_t *r) {
int x;
mpc_input_t *i = mpc_input_new_file(filename, file);

1
mpc.h
View File

@@ -61,6 +61,7 @@ struct mpc_parser_t;
typedef struct mpc_parser_t mpc_parser_t;
int mpc_parse(const char *filename, const char *string, mpc_parser_t *p, mpc_result_t *r);
int mpc_nparse(const char *filename, const char *string, size_t length, mpc_parser_t *p, mpc_result_t *r);
int mpc_parse_file(const char *filename, FILE *file, mpc_parser_t *p, mpc_result_t *r);
int mpc_parse_pipe(const char *filename, FILE *pipe, mpc_parser_t *p, mpc_result_t *r);
int mpc_parse_contents(const char *filename, mpc_parser_t *p, mpc_result_t *r);