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fromString.c
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fromString.c
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#include <unistd.h>
int leftOffsetSize=-1;
int offs=0;
char leftOffsetChar = '\t';
char BS=8;
char colsep = '.';
char nextChar(char* str) {
return str[offs++];
}
void indent(){
for (int i=0; i<leftOffsetSize; i++) {
write(1, &leftOffsetChar, 1);
write(1, &colsep, 1);
}
if (leftOffsetSize > 0) write(1, &BS, 1);
}
void removePrecedingSpaces(char* str) {
while(str[offs] == ' ' || str[offs] == '\t') {
offs++;
}
}
void printchar(char c) {
write(1, &c, 1);
}
void printnl(){
printchar('\n');
}
void print(char* str) {
int length = 0;
while(str[length++] != '\0');
write(1, str, --length);
}
void println(char* str) {
print(str);
printnl();
}
int fromString(char* str) {
leftOffsetSize++;
char c;
printnl();
indent();
c = nextChar(str);
while ((c != ']' && c != '}') && c != '\0') {
printchar(c);
if (c == ',') {
printnl();
indent();
removePrecedingSpaces(str);
} else
if ((c == '[' || c == '{') && ! fromString(str)) {
return 0;
}
c = nextChar(str);
}
leftOffsetSize--;
if (c == '\0') return 0;
printnl();
indent();
printchar(c);
return 1;
}
int main(int argc, char** argv) {
if (argc > 1) {
fromString(argv[1]);
} else {
println("E: missing object string");
return 1;
}
printnl();
return 0;
}