changed to linux, added basic reading of datasets

This commit is contained in:
Rory Healy 2021-08-24 23:55:19 +10:00
parent 69dd495ac0
commit c5e2c25789
20 changed files with 84 additions and 18 deletions

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Makefile Normal file → Executable file
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README.md Normal file → Executable file
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dataset_1.csv Normal file → Executable file
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dataset_10.csv Normal file → Executable file
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dataset_100.csv Normal file → Executable file
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dataset_2.csv Normal file → Executable file
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dataset_full.csv Normal file → Executable file
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output.txt Normal file → Executable file
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poly_1split.txt Normal file → Executable file
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poly_2split.txt Normal file → Executable file
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poly_3split.txt Normal file → Executable file
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poly_4split.txt Normal file → Executable file
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poly_5split.txt Normal file → Executable file
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polygon_irregular.txt Normal file → Executable file
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polygon_square.txt Normal file → Executable file
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square_1split.txt Normal file → Executable file
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square_2split.txt Normal file → Executable file
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voronoi.c Normal file → Executable file
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@ -14,10 +14,17 @@
#define NUM_FILE_ERROR "Error: Incorrect number of inputs (3 required).\n" #define NUM_FILE_ERROR "Error: Incorrect number of inputs (3 required).\n"
#define MALLOC_ERROR "Error: Cannot allocate memory.\n" #define MALLOC_ERROR "Error: Cannot allocate memory.\n"
#define ARGC_CORRECT_LEN 4
#define NUM_CSV_FIELDS 6
#define MAX_FIELD_LEN 128
#define MAX_CSV_ENTRY_LEN 512
int main(int argc, char **argv) { int main(int argc, char **argv) {
/* Input and output files */
FILE *dataset = NULL, *polygonData = NULL, *output = NULL; FILE *dataset = NULL, *polygonData = NULL, *output = NULL;
checkInputArgs(argc, argv, &dataset, &polygonData, &output); checkInputArgs(argc, argv, &dataset, &polygonData, &output);
/* Stores information about the watchtowers given in dataset file */
watchtower_t *watchtowers = (watchtower_t *) malloc(sizeof(watchtower_t)); watchtower_t *watchtowers = (watchtower_t *) malloc(sizeof(watchtower_t));
if (watchtowers == NULL) { if (watchtowers == NULL) {
fputs(MALLOC_ERROR, stderr); fputs(MALLOC_ERROR, stderr);
@ -26,7 +33,7 @@ int main(int argc, char **argv) {
readWatchtowers(watchtowers, dataset); readWatchtowers(watchtowers, dataset);
// Cleaning up data /* Cleaning up data */
free(watchtowers); free(watchtowers);
fclose(dataset); fclose(dataset);
fclose(polygonData); fclose(polygonData);
@ -34,9 +41,10 @@ int main(int argc, char **argv) {
return 0; return 0;
} }
/* Checks the validity of the command line input arguments */
void checkInputArgs(int argc, char **argv, FILE **datasetFile, \ void checkInputArgs(int argc, char **argv, FILE **datasetFile, \
FILE **polygonFile, FILE **outputFile) { FILE **polygonFile, FILE **outputFile) {
if (argc != 4) { if (argc != ARGC_CORRECT_LEN) {
fputs(NUM_FILE_ERROR, stderr); fputs(NUM_FILE_ERROR, stderr);
exit(EXIT_FAILURE); exit(EXIT_FAILURE);
} }
@ -60,25 +68,83 @@ FILE **polygonFile, FILE **outputFile) {
} }
} }
/* Reads the CSV file and stores the information in the watchtowers array */
void readWatchtowers(watchtower_t *watchtowers, FILE* datasetFile) { void readWatchtowers(watchtower_t *watchtowers, FILE* datasetFile) {
char *lineBuffer; /* Maximum length of a single CSV line */
int lineCount = 0; size_t lineBufferSize = MAX_CSV_ENTRY_LEN;
size_t lineBufferSize = 512;
size_t numberCharsRead;
lineBuffer = (char *) malloc(lineBufferSize * sizeof(char)); /* Stores the current line from the CSV */
char *lineBuffer = (char *) malloc(lineBufferSize * sizeof(char));
if (lineBuffer == NULL) { if (lineBuffer == NULL) {
fprintf(stderr, MALLOC_ERROR); fprintf(stderr, MALLOC_ERROR);
exit(EXIT_FAILURE); exit(EXIT_FAILURE);
} }
numberCharsRead = getline(&lineBuffer, &lineBufferSize, datasetFile); int numWatchtowers = 1;
while (numberCharsRead > 0) {
lineCount += 1; /* Discard the header line, then read the rest of the CSV */
printf("line[%06d]: chars=%06zd, buf size=%06zu, contents: %s",\ getline(&lineBuffer, &lineBufferSize, datasetFile);
lineCount, numberCharsRead, lineBufferSize, lineBuffer); while (getline(&lineBuffer, &lineBufferSize, datasetFile) > 0) {
numberCharsRead = getline(&lineBuffer, &lineBufferSize, datasetFile); /* The current tower being filled in with information */
watchtower_t *currTower = (watchtower_t *) malloc(sizeof(watchtower_t));
/* Stores the current CSV field for the current line */
char *token = strtok(lineBuffer, ",");
size_t tokenLength;
/* Read the line in to currTower */
for (int i = 0; i < NUM_CSV_FIELDS; i++) {
tokenLength = strlen(token);
switch(i) {
/* Case 0, 1, and 3 deal with strings in the CSV
* Case 2 deals with an integer
* Case 4 and 5 deal with doubles
* Each case is handled seperately to fill in the
* watchtower with no space wasted.
*/
case 0:
currTower->id = (char *) malloc(sizeof(char) * \
tokenLength + 1);
strcpy(currTower->id, token);
currTower->id[tokenLength] = '\0';
break;
case 1:
currTower->postcode = (char *) malloc(sizeof(char) * \
tokenLength + 1);
strcpy(currTower->postcode, token);
currTower->postcode[tokenLength] = '\0';
break;
case 3:
currTower->manager = (char *) malloc(sizeof(char) * \
tokenLength + 1);
strcpy(currTower->manager, token);
currTower->manager[tokenLength] = '\0';
break;
case 2:
currTower->population = strtol(token, NULL, 10);
break;
case 4:
currTower->x = strtod(token, NULL);
break;
case 5:
currTower->y = strtod(token, NULL);
break;
}
token = strtok(NULL, ",");
}
// printf("ID: %s\nPostcode: %s\nManager: %s\n", \
// currTower->id, currTower->postcode, currTower->manager);
// printf("Population: %d\nx: %f\ny: %f\n", \
// currTower->population, currTower->x, currTower->y);
/* Add currTower to the watchtowers array */
/* Clean up currTower before reading next CSV line */
free(currTower->id);
free(currTower->manager);
free(currTower->postcode);
free(currTower);
} }
free(lineBuffer); free(lineBuffer);
lineBuffer = NULL;
} }

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voronoi.h Normal file → Executable file
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@ -1,4 +1,4 @@
typedef struct { typedef struct watchtower {
char *id; char *id;
char *postcode; char *postcode;
char *manager; char *manager;
@ -8,5 +8,5 @@ typedef struct {
} watchtower_t; } watchtower_t;
void checkInputArgs(int argc, char **argv, FILE **datasetFile, \ void checkInputArgs(int argc, char **argv, FILE **datasetFile, \
FILE **polygonFile, FILE **outputFile); FILE **polygonFile, FILE **outputFile);
void readWatchtowers(watchtower_t *watchtowers, FILE* datasetFile); void readWatchtowers(watchtower_t *watchtowers, FILE* datasetFile);

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voronoi1

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