基于C语言的MiniCSV解析库示例：csv文件解析

#include <ctype.h> #include <stdlib.h> #include <string.h> #include "minicsv.h" static inline void _minicsv_out_col(char * const col_start, char ** const cols, size_t * const cols_count_p, const size_t cols_max) { if (*cols_count_p < cols_max) { cols[*cols_count_p] = col_start; } (*cols_count_p)++; } static inline void _minicsv_parse_line_noquote(const int c, char ** const pos_p, char ** const col_start_p, int * const state_p, char ** const cols, size_t * const cols_count_p, const size_t cols_max) { switch (c) { case '\n': *state_p = 2; case MINICSV_DELIM: *(*pos_p)++ = 0; _minicsv_out_col(*col_start_p, cols, cols_count_p, cols_max); *col_start_p = *pos_p; break; case MINICSV_QUOTE: *state_p = 1; *col_start_p = ++*pos_p; break; case '\r': **pos_p = 0; default: (*pos_p)++; } } static inline void _minicsv_parse_line_quote(const int c, char ** const pos_p, int * const state_p) { if (c == MINICSV_QUOTE) { if (*(*pos_p + 1U) == MINICSV_QUOTE) { memmove(*pos_p, *pos_p + 1U, strlen(*pos_p)); } else { **pos_p = 0; *state_p = 0; } } (*pos_p)++; } char * minicsv_parse_line(char * const buf, char ** const cols, size_t * const cols_count_p, const size_t cols_max) { char *col_start = buf; char *pos = buf; int c; int state = 0; *cols_count_p = (size_t) 0U; while ((c = *pos) != 0) { switch (state) { case 0: _minicsv_parse_line_noquote(c, &pos, &col_start, &state, cols, cols_count_p, cols_max); break; case 1: _minicsv_parse_line_quote(c, &pos, &state); break; case 2: return pos; } } if (state == 0) { _minicsv_out_col(col_start, cols, cols_count_p, cols_max); } return pos; } void minicsv_trim_cols(char ** const cols, const size_t cols_count) { char *col; size_t col_end; size_t i = (size_t) 0U; while (i < cols_count) { col = cols[i]; while (*col != 0 && isspace((int) (unsigned char) *col)) { cols[i] = ++col; } col_end = strlen(col); while (col_end > (size_t) 0U && isspace((int) (unsigned char) col[--col_end])) { col[col_end] = 0; } i++; } }