/**************************************************************************** * tools/csvparser.c * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. The * ASF licenses this file to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance with the * License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. * ****************************************************************************/ /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include #include #include #include #include "csvparser.h" /**************************************************************************** * Pre-processor Definitions ****************************************************************************/ /**************************************************************************** * Private Data ****************************************************************************/ /**************************************************************************** * Public Data ****************************************************************************/ bool g_debug; char g_line[LINESIZE + 1]; char g_parm[MAX_FIELDS][MAX_PARMSIZE]; int g_lineno; /**************************************************************************** * Private Functions ****************************************************************************/ /**************************************************************************** * Name: skip_space ****************************************************************************/ static char *skip_space(char *ptr) { while (*ptr && isspace((int)*ptr)) ptr++; return ptr; } /**************************************************************************** * Name: copy_parm ****************************************************************************/ static char *copy_parm(char *src, char *dest) { char *start = src; int i; /* De-quote the parameter and copy it into the parameter array */ for (i = 0; i < MAX_PARMSIZE; i++) { if (*src == '"') { *dest = '\0'; return src; } else if (*src == '\n' || *src == '\0') { fprintf(stderr, "%d: Unexpected end of line: \"%s\"\n", g_lineno, start); exit(4); } else { *dest++ = *src++; } } fprintf(stderr, "%d: Parameter too long: \"%s\"\n", g_lineno, start); exit(3); } /**************************************************************************** * Name: find_parm ****************************************************************************/ static char *find_parm(char *ptr) { char *start = ptr; if (*ptr != '"') { fprintf(stderr, "%d: I'm confused: \"%s\"\n", g_lineno, start); exit(5); } ptr++; ptr = skip_space(ptr); if (*ptr == '\n' || *ptr == '\0') { return NULL; } else if (*ptr != ',') { fprintf(stderr, "%d: Expected ',': \"%s\"\n", g_lineno, start); exit(6); } ptr++; ptr = skip_space(ptr); if (*ptr != '"') { fprintf(stderr, "%d: Expected \": \"%s\"\n", g_lineno, start); exit(7); } ptr++; return ptr; } /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * Name: read_line ****************************************************************************/ char *read_line(FILE *stream) { char *ptr; for (; ; ) { g_line[LINESIZE] = '\0'; if (!fgets(g_line, LINESIZE, stream)) { return NULL; } else { g_lineno++; if (g_debug) { printf("Line: %s\n", g_line); } ptr = skip_space(g_line); if (*ptr && *ptr != '#' && *ptr != '\n') { return ptr; } } } } /**************************************************************************** * Name: parse_csvline ****************************************************************************/ int parse_csvline(char *ptr) { int nparms; int i; /* Format "arg1","arg2","arg3",... Spaces will be tolerated outside of the * quotes. Any initial spaces have already been skipped so the first thing * should be '"'. */ if (*ptr != '"') { fprintf(stderr, "%d: Bad line: \"%s\"\n", g_lineno, g_line); exit(2); } ptr++; nparms = 0; /* Copy each comma-separated value in an array (stripping quotes from each * of the values). */ do { if (nparms >= MAX_FIELDS) { fprintf(stderr, "%d: Too many Parameters: \"%s\"\n", g_lineno, g_line); exit(8); } ptr = copy_parm(ptr, &g_parm[nparms][0]); nparms++; ptr = find_parm(ptr); } while (ptr); /* If debug is enabled, show what we got */ if (g_debug) { printf("Parameters: %d\n", nparms); for (i = 0; i < nparms; i++) { printf(" Parm%d: \"%s\"\n", i + 1, g_parm[i]); } } return nparms; }