我遇到了一个我以前从未遇到过的问题并且感到困惑......由于某种原因，当我尝试按字符读取CSV文件时，但似乎空格以某种方式放置在那里......更奇怪的是任何地方都不存在空格字符的事实。我举个例子...
char *readgd(const char *fname)
{
char *gddata, *tmp;
FILE *fp;
int buff = 1024, c = 0, ch;
if(!(fp = fopen(fname, "r")))
{
printf("\nError! Could not open %s!", fname);
return 0x00;
}
if(!(gddata = malloc(buff)))
{
fclose(fp);
printf("\nError! Memory allocation failed!");
return 0x00;
}
while(ch != EOF)
{
c++;
ch = fgetc(fp);
if(buff <= c)
{
buff += buff;
if(!(tmp = realloc(gddata, buff)))
{
free(gddata);
fclose(fp);
printf("\nError! Memory allocation failed!");
}
gddata = tmp;
}
gddata[c - 1] = ch;
if(gddata[c - 1] != ' ') printf("%c", gddata[c - 1]); //no spaces?
}
if(!(tmp = realloc(gddata, c + 1)))
{
free(gddata);
fclose(fp);
printf("\nError! Memory allocation failed!");
}
gddata = tmp;
gddata[c] = 0x00;
fclose(fp);
return gddata;
}
使用以下 CSV 片段：
:Tagname,Area,SecurityGroup,Container,ContainedName,ShortDesc,ExecutionRelativeOrder,ExecutionRelatedObject,UDAs,Extensions,CmdData,Address_ACbHAlmCfg,Address_ACbHWarnCfg,Address_ACbLAlmCfg,Address_ACbLWarnCfg,Address_ACbTfCfg,Address_ACrHAlmDb,Address_ACrHAlmSp,Address_ACrHAlmTmrSp,Address_ACrHWarnDb,Address_ACrHWarnSp,Address_ACrHWarnTmrSp,Address_ACrLAlmDb,Address_ACrLAlmSp,Address_ACrLAlmTmrSp,Address_ACrLWarnDb,Address_ACrLWarnSp,Address_ACrLWarnTmrSp,Address_ACrTfTmrSp,Address_bHalm,Address_bHWarn,Address_bLAlm,Address_bLwarn,Address_bMode,Address_bTfAlm,Address_rCCmd,Address_rVal,
将其输出到控制台：
■: T a g n a m e , A r e a , S e c u r i t y G r o u p , C o n t a i n e r , C
o n t a i n e d N a m e , S h o r t D e s c , E x e c u t i o n R e l a t i v e
O r d e r , E x e c u t i o n R e l a t e d O b j e c t , U D A s , E x t e n s
i o n s , C m d D a t a , A d d r e s s _ A C b H A l m C f g , A d d r e s s _
A C b H W a r n C f g , A d d r e s s _ A C b L A l m C f g , A d d r e s s _ A
C b L W a r n C f g , A d d r e s s _ A C b T f C f g , A d d r e s s _ A C r H
A l m D b , A d d r e s s _ A C r H A l m S p , A d d r e s s _ A C r H A l m T
m r S p , A d d r e s s _ A C r H W a r n D b , A d d r e s s _ A C r H W a r n
S p , A d d r e s s _ A C r H W a r n T m r S p , A d d r e s s _ A C r L A l m
D b , A d d r e s s _ A C r L A l m S p , A d d r e s s _ A C r L A l m T m r S
p , A d d r e s s _ A C r L W a r n D b , A d d r e s s _ A C r L W a r n S p ,
A d d r e s s _ A C r L W a r n T m r S p , A d d r e s s _ A C r T f T m r S p
, A d d r e s s _ b H a l m , A d d r e s s _ b H W a r n , A d d r e s s _ b L
A l m , A d d r e s s _ b L w a r n , A d d r e s s _ b M o d e , A d d r e s s
_ b T f A l m , A d d r e s s _ r C C m d , A d d r e s s _ r V a l ,
我很困惑这些空间是从哪里来的。任何帮助将不胜感激。