动漫人物
一个完整的示例，它将字段保留为原始输入缓冲区中以空结尾的字符串，并通过char指针数组提供对它们的访问。CSV处理器已经确认可以使用“双引号”中的字段，而忽略其中的任何分隔符字符。#include <stdio.h>#include <stdlib.h>#include <string.h>// adjust BUFFER_SIZE to suit longest line #define BUFFER_SIZE 1024 * 1024#define NUM_FIELDS 10#define MAXERRS 5#define RET_OK 0#define RET_FAIL 1#define FALSE 0#define TRUE 1// char* array will point to fieldschar *pFields[NUM_FIELDS];// field offsets into pFields array:#define LP 0#define IMIE 1#define NAZWISKo 2#define ULICA 3#define NUMER 4#define KOD 5#define MIEJSCOw 6#define TELEFON 7#define EMAIL 8#define DATA_UR 9long loadFile(FILE *pFile, long *errcount);static int loadValues(char *line, long lineno);static char delim;long loadFile(FILE *pFile, long *errcount){ char sInputBuf [BUFFER_SIZE]; long lineno = 0L; if(pFile == NULL) return RET_FAIL; while (!feof(pFile)) { // load line into static buffer if(fgets(sInputBuf, BUFFER_SIZE-1, pFile)==NULL) break; // skip first line (headers) if(++lineno==1) continue; // jump over empty lines if(strlen(sInputBuf)==0) continue; // set pFields array pointers to null-terminated string fields in sInputBuf if(loadValues(sInputBuf,lineno)==RET_FAIL){ (*errcount)++; if(*errcount > MAXERRS) break; } else { // On return pFields array pointers point to loaded fields ready for load into DB or whatever // Fields can be accessed via pFields, e.g. printf("lp=%s, imie=%s, data_ur=%s\n", pFields[LP], pFields[IMIE], pFields[DATA_UR]); } } return lineno;}static int loadValues(char *line, long lineno){ if(line == NULL) return RET_FAIL; // chop of last char of input if it is a CR or LF (e.g.Windows file loading in Unix env.) // can be removed if sure fgets has removed both CR and LF from end of line if(*(line + strlen(line)-1) == '\r' || *(line + strlen(line)-1) == '\n') *(line + strlen(line)-1) = '\0'; if(*(line + strlen(line)-1) == '\r' || *(line + strlen(line)-1 )== '\n') *(line + strlen(line)-1) = '\0'; char *cptr = line; int fld = 0; int inquote = FALSE; char ch; pFields[fld]=cptr; while((ch=*cptr) != '\0' && fld < NUM_FIELDS){ if(ch == '"') { if(! inquote) pFields[fld]=cptr+1; else { *cptr = '\0'; // zero out " and jump over it } inquote = ! inquote; } else if(ch == delim && ! inquote){ *cptr = '\0'; // end of field, null terminate it pFields[++fld]=cptr+1; } cptr++; } if(fld > NUM_FIELDS-1){ fprintf(stderr, "Expected field count (%d) exceeded on line %ld\n", NUM_FIELDS, lineno); return RET_FAIL; } else if (fld < NUM_FIELDS-1){ fprintf(stderr, "Expected field count (%d) not reached on line %ld\n", NUM_FIELDS, lineno); return RET_FAIL; } return RET_OK;}int main(int argc, char **argv){ FILE *fp; long errcount = 0L; long lines = 0L; if(argc!=3){ printf("Usage: %s csvfilepath delimiter\n", basename(argv[0])); return (RET_FAIL); } if((delim=argv[2][0])=='\0'){ fprintf(stderr,"delimiter must be specified\n"); return (RET_FAIL); } fp = fopen(argv[1] , "r"); if(fp == NULL) { fprintf(stderr,"Error opening file: %d\n",errno); return(RET_FAIL); } lines=loadFile(fp,&errcount); fclose(fp); printf("Processed %ld lines, encountered %ld error(s)\n", lines, errcount); if(errcount>0) return(RET_FAIL); return(RET_OK); }